It's great news for Google.. and oddly, if anyone else benefits, it's Microsoft. This takes the back and forth over licensing fees straight home, but it also is likely to make other vendors (Samsung, HTC, LG) listen.
While Google, Apple & RIM own the marketplace, for the first time, WindowsMobile (WP7) gained marketspace.. and a fair bit in the last quarter, going from a falling position down to 4.8% of shipments up to 9% of sell through. That's still nothing in comparison to say, 28% Apple, etc. but it's a serious reversal of trends.
The reason why I mention them though is more obvious: Google as a platform was the one that pitched across multiple manufacturers as a development platform. Them snagging up Motorola leaves only MS as someone not branding their own hardware. For companies that make the hardware like LG, Samsung, HTC, this might be felt like a body blow against their position on Android. And them using virtually identical hardware for WP7 is not a big issue.
We'll wait and see. Motorola simply isn't as big as it would seem; it's not as ubiquitous as when the Motorola Razr dominated the market. Times have changed. The question is will Google's hardware acquisition help their development and profitability more then it will hurt their position with 3rd party hardware vendors.
And that's going to be interesting.
Android's failure was fragmentation. WP7 has basically avoided that by having the software as truly universal and forcing all updates to be managed by them so they are rolled out at the same time, avoiding the mix-match problem of Android. Google felt as though they had to pull in Android's setup. I am very interested in how this turns out, because either a model that allows for a software only vendor can work (but it isn't google) or it can't.
I think Google's method gets harder. I think them acquiring Motorola means you're more likely to see fragmentation then less. But who knows.