An OS is the ideal goal of BitShares, as it reminds us an important fact:
The winner is always the most user-friendly one, not the most powerful one.
Comparing Windows, MacOS(<=9 and X), and Linux, you can see while Linux can almost do anything, but the winner is never linux for average users.
Even among linux distros, the most popular distros are always newbie-friendly, not geek-friendly.
Another imortant fact is that a worse OS could win just because it has a
killer app on it. For example, although I am using linux as my desktop OS, I have to intall windows inside virtualbox to use MS Office in many cases. We ergently need such app in our platform.
To sum up, I think the 'killer app' for cryptocoins is financial/merchnt adoption, this explains why bitcoin has the least function but has the largest marketcap.