Things are heading in that direction anyway though with iOS and the OHA.
Just because one system in the market does something does not mean everyone must do that thing. Even if major companies adopt that practice, that does not mean other companies must, nor that consumers should be complacent in accepting that change.
"The price of freedom is eternal vigilance."
If consumers allow companies to close the market, segment it, and exploit them, then that is as much the consumer's fault as theirs. One tool is education. Another is consumer action, either distributing software themselves, or supporting the companies that meet their needs.
Further, the closed nature of smartphone hardware contributes to being able to lock down that part of the market. It is why open hardware standards, such as PC, should continue to be supported, as they keep the market honest, and push innovations.
The massive backlash against Window 8 and its proposition to close off applications that were not Microsoft approved, as illustrated by Valve's hesitation at that prospect, should have been enough to keep Microsoft from attempting to do so again. If they try to do so again, I hope there will be just as much backlash.