It does in the context of users voting with their feet - most users care about what their phone can and can't do, not about what's artificial. (Indeed, they may associate more open systems with malware.)
Voting with your feet works less when you only really* have the choice between Android or iOS, Democrat or Republican, Comcast or AT&T, etc.
*if you want your phone to be compatible with the vast majority of external devices, services, stuff your friends have, etc, or if you want your political critter to stand a chance of winning, or if you want to not have dial-up, pay a few hundred dollars a month +, have a really slow connection, or go without Internet.
