Let's cut the crap. What are these 'pros' of an open platform for the average user? You know, 95% of users who don't even know what the hell closed and open mean. Let's face it- for most people, the 'benefits' of an open system are nil. Nada. You think the vast majority of people aren't satisfied with the close to half-million apps on the appstore? They're dying to get those handful of apps which are rejected for various reasons? They want to modify their kernels? No, they don't give a ****. The one who can provide the easiest and best user experience wins.
This. But that takes attention to detail, planning, learning to say no to a thousand things, courage, etc.
I'm not sure Google and the also-rans have the guts for it.