I don't think it's that they can't handle more than one thing. I think it's just that they want to focus their attention on the new movies. Makes perfect sense to me.
And I don't see them hating anything, I really think it's just a case of them wanting to do their own thing, and not have to deal with something that was started up by a competing company, and someone who is technically no longer with the company. I believe that was the same thing they did with the Marvel animated series when they bought it. I think at times people forget that they are companies who are out to make as much for themselves, and would have probably had to share the profits with the other company.