I'm reading all the post and some ideas are good.
IMHO what could sell Pegasos is to be able with Morphos to do all you can do with a PC or a MAC. Good browers, Mailer, Office compatible suite, media center, TCP IP...
When all those development will be achieve and tested, it will be possible to get some interest from basic users. Don't forget that most of people are using Windows and they won't switch to another platform or OS until they can do all they are doing today.
AFAIK most of pegasos user still use another computer for specific applications.
When all features will be implemented on Mos, the interest will grow by itself