Ultimately, it will depend on how many companies survive and which ones do not.
Although this is an educated guess on my part and not based on any actual figures that I have seen but my price range is more around $10-$15 per month with ads and perhaps $20-$25 per month without which is not a major difference from what you are saying.
I think once the dust settles the remaining few companies will be in a position to price their services to reflect fully the costs and risks of doing business.
I get the sense your "educated guess[ing]" could use more real info, including actually having a bit more experience w/ the various streamers (and what they're about and where they're coming from).
You already showed you likely have zero experience based on some of the conjectures/rhetoric you posed.
Anyway, seriously doubt the various streamers would be able to push service pricing quite that far unless they merged to form streaming businesses each at least as big as NetFlix... and that's probably not too likely for the foreseeable future at least in part because many of them have other very substantial interests (at least somewhat) external to the streaming business side itself, eg. Disney is much **MUCH** bigger than just Disney+ (or Hulu or ESPN+) and they basically already offer their own version of discounted merged packages (for all 3 w/out necessarily doing as you think), CBS/Paramount isn't just Paramount+ and won't easily/likely sell out to someone else anytime soon, Warner isn't just HBO Max either, NBC/Universal isn't just Peacock streaming, Amazon could probably care less about subscription streaming beyond being a loss leader (as you also admitted) whereas Apple probably cares a bit more, but maybe only a bit more, while both Amazon and Apple also sell/rent digitals, not just streaming subs.
So yes and no -- more no than yes. Disney's sorta already doing what you think on their own (and has been gobbling up studios, not merely struggling streaming bizzes, on their way there)... but they're *not* forcing subscribers to pay that higher price for bundled content they don't necessarily want. IF you want Disney+ plus Hulu plus ESPN+, you could get them all bundled together for a discounted $20/month w/out ads. You can choose smaller/diff bundle or just going w/ 1 at a time (where Disney+ is only $8/month ad-free)... or get more discounts w/ annual subscription.
Apple's also doing their own kind of bundling outside what you imagined w/ the Apple One that bundles their other subscription-based offerings, including iCloud storage. Amazon (and maybe Google at some point) could do likewise if they really want.
Sure, bundling means higher prices... but that doesn't mean the avg subscriber will necessarily pay (significantly) more than before for the same amount of content... and that's really what matters most to the avg subscriber.
Competition is keeping prices low at the moment and companies like Amazon are preventing the likes of Netflix from raising their prices any further than what they are now.
Amazon probably more than any other company with perhaps the exception of Apple can continue to lose money on the service as it is not their main focus of revenue/profits much to the detriment of the companies that are primarily a streaming business.
My thinking leads me to believe that Amazon will probably be one of the few companies left after the fallout along with offering the cheapest service to consumers too.
Amazon *might* be contributing somewhat to keeping prices lower, but probably not by much. Amazon's subscription streaming sucks (and it's been that way forever now). Have you even ever used it at all? Most people who really want to do all that much streaming (and would pay for it) wouldn't really care about Amazon's service for that. There's no real competition between Amazon and Netflix... and Amazon shouldn't actually want to hurt NF's the bizz at all anyway -- they provide the tech backend infrastructure for NF last I checked and probably get paid handsomely for that.
We might even get a bizarre situation where the dedicated streaming firms like Netflix disappear and the conglomerates like Amazon and Apple are the ones left at the table.
I wouldn't even be surprised if Netflix gets bought by Amazon.
This is actually not too likely at all. Amazon already gets their cut from Netflix on the backend by hosting the streaming infrastructure for them. No point in investing much more into NF (and getting into all sorts of muck) unless NF's about to die and Amazon doesn't have a cut from whoever replaces NF at the top of the heap.
Remember. Amazon's not really in this to win the streaming wars. Their own consumer-facing streaming bizz seems mostly just fodder for them (and maybe it's even helpful for sorta staging/beta testing their infrastructure services), and they seem to put almost no resources into it (the frontend) other than the sporadic "Amazon Original" programming... although they now seem to be investing fairly substantially in the upcoming Lord of the Rings prequel series. They're probably very happy if NF keeps being the king of the (subscription) streaming hill and paying them for their backend services w/ essentially no risk to them...
Very doubtful that Disney would ever sell out to Amazon or Apple -- Disney even has additional cut of the non-subscription-streaming pie via Movies Anywhere. And doubtful (newly merged) Warner Discovery, NBC/Universal or Viacom (CBS/Paramount) would sell out to them either. Again, don't think Amazon's even interested in winning the streaming wars, except on the backend side. Similar might be true for Apple too. But don't forget Google and/or even Microsoft might somehow jump into that mix too -- they both sell/rent digitals, but don't currently offer (any significant) subscription streaming.
Of course, waaaay down the line like a 2-3 decades or more from now, anything could happen. But if we're only talking the near/foreseeable future say 5 years from now? No way that happens.
_Man_