I don't think you need the mainstream users to make a Linux device commercially viable. Everyone that wants to support Linux / Free software should spend their money wisely. Buying hardware with a proprietary OS installed while there are free options is a bad (long term) decision IMO. Seeing that someone like Linus Torvalds bought a MacBook Air 'because the screen was better' was really disappointing. I recently found out that some of the guys from Bad Voltage are owning iPhones.. wtf..