I can't understand this comment now, after the youporn success story... Isn't this enough for enterprise people?

Ok seriously now... Groupon did an event a few days ago about how they use Redis with success, Twitter uses Redis for caching timelines, Github does a good use of Redis, and similarly do many other non trivial companies, like Craigslist, Stack Overflow, Digg, ...

Those are not "enterprise" companies, but the problems they solve are not different, so IMHO the real problem is a cultural barrier. I think that this is just a matter of time.