I don't think anybody buys their product for the specific reason that they can not do certain things. Nobody likes the restrictions. People buy a product because there are features (things they can do) that they want, including intangible features like usability (it's easier to make a full system backup on iOS than on Android, for example)

Edit: or maybe I'm wrong. I do know one person who bought a phone because it sucked, because they didn't want to spend as much time glued to the device. It was an Android with a tiny tiny screen, though, because iOS would not be allowed to run on hardware of your choosing due to Apple's restrictions... Either way, I guess there is a market of people who do want to inflict pain upon themselves, but this really does seem like exceedingly niche argument to me. Saying that the restrictions are the reason why their demographic buys their device is just buying into Apple's lies that fund their bottom line