oldschool: I think it's great. Maybe the big boys (Microsoft, Sony and Nintendo) will have to totally re-think their business strategy. Rule # 1 Competition is always a good thing. I hope this new platform suceeds.
Elenarie: Just like the thousand other Android devices made them rethink their business strategy, right? :p
You mean like partnering with Nokia and spending massive amounts of money to try and make Windows Phone 7 not suck (after the Kin debacle, no less) and then considering unified UI so important they went out of their way to make all Windows 8 type platforms work largely the same?
Trust me, MS gets it, they may not like it, they may flub their first attempt or two, but Android and Google is one of their primary concerns and much of their strategy is specifically aimed at kicking their ass;)
As for Sony, I can't say I understand Sony as a company.