For a bitcoin noob, right now its a lot like when email was in it's infancy. You couldnt just make a
sample@whatever.com email address. You had a string of numbers. As people developed the architecture, it got easier to use and spread like wild fire. The same will happen to bitcoin. The foundation will remain the same, but it will become more and more user friendly. Bill Gates is saying "the foundation is great, but right now it has a few hurdles to overcome before it's mainstream".
While everybody uses email these days, very few people use hotmail or early email service providers.
I hope Bitcoin doesn't meet the same fate.