My question is related to "Is Ruby on Rails ready for the Enterprise?" My question is not about IF Ruby on Rails/Grails is ready for the enterprise - my question is will they ever catch on in the enterprise?
J2EE applications have such a strong foothold right now and a lot of investment from the giants (IBM, Oracle, etc) and those giants make a lot of money from building and selling J2EE applications. It's hard to imagine a world where that cash cow would get overshadowed by something else. If RoR/Grails isn't going to catch on - what will? Or will we just see a continual evolution of J2EE?
Is it worth it to learn these technologies from a career/working perspective or is it solely an academic pursuit?