Then Stack Overflow would be the Expertsexchange of 2013
Classic bait and switch. That's how things have played out since Geocities. You young guns sweating over Stack Exchange points don't remember those days. That's why you register a dot-com, to protect your content.
It's just another content farm looking for unpaid labor.
Because it's an excellent resource, it could be monetized with a paywall. We can't predict the future but we can learn from the past.
They're already monetizing it with http://careers.stackoverflow.com/employer
They don't really have much competition but I think http://snipt.net/ is a good alternative in certain situations.