Given that, in the back of every customer's mind, across all segments, they cannot allow one vendor to have or exert too much control, it is a wonder why any company would seek to own a platform to such an extent. The better and more integrated you get, the more of a risk you become.
And of course I'm speaking on the context of what I'm building, not the world we're in. There are plenty of platforms that are more important than what they platform. I believe it was Bill Gates that said the value of all the things on the platform must exceed the platform itself. We have some inversions at present that are ripe to undergo Rayleigh–Taylor instability.