If I understand you correctly, you're wondering if you'll be able to install Ubuntu on all of your devices? I don't think that is the model they are going for,

If I understand you correctly, you're wondering if you'll be able to install Ubuntu on all of your devices? I don't think that is the model they are going for, and it really doesn't suit the mass market anyway. As I understand it, they are trying to provide the best experience so that manufacturers decide to use them as the OS platform for their devices. Then you'll just go out and buy Ubuntu devices. You don't actually install and select your OS.