The value isn't in the Mining, its in the users.

I think it's the same as Desktop Operating Systems. Yes, Linux is probably better than Windows, technically, but the users, and therefore the developers (and vise versa.) just aren't there.

Bitcoin2 will appear, but it will need significant advantages over bitcoin to gain value, and even then it will take many years longer to reach the limited success that Bitcoin has seen so far, because the idea is no longer new, and likely early adopter will be already fully vested in bitcoin. Hmm, probably the same reason the banks and governments aren't jumping into bitcoin.