I've been thinking about creating a company, or foundation, around the idea of owning your own data. You'd have a hardware device like a powerful tablet always connected at home, and use a "generic" third party to do backups and enable pocking holes at NAT. You'd use this to store your music and listen it from anywhere, to run your email, instant messages, storing your photos, streaming movies from your downloaded collection...

I'd love to be working in that project, however it does not exist yet and I haven't found enough interested people.