It's surprising that you talk about "learning" Rails though.
I am not an entrepreneur so take this is a shovelful of salt, but I wouldn't venture into creating a business on a technology that I have to learn along the way.
Also, I am now confused that Rails is turning into Java, yet you recently saw a beautiful piece of Java. Rails is just like Java and its "darker" Enterprise Side ™, you get to pick and choose what you want to use, no one is forcing RefineryCMS and Devise and whatnot down your text editor :D
I am not an entrepreneur so take this is a shovelful of salt, but I wouldn't venture into creating a business on a technology that I have to learn along the way.
Also, I am now confused that Rails is turning into Java, yet you recently saw a beautiful piece of Java. Rails is just like Java and its "darker" Enterprise Side ™, you get to pick and choose what you want to use, no one is forcing RefineryCMS and Devise and whatnot down your text editor :D