My gut feeling tells me, that this is a good thing for Android. Google's business model is all about advertising...it doesn't make any sense for them to push their current partners out of the market but taking it over with Motorola. Consider what would happen if Apple would sell licenses of iOS to third parties...would there be devices from other companies that run on iOS? I think so! And considering that Android is actually free, i don't see why third party companies should stop making Android based phones.