I actually think it is more of a time issue for Andreas. He was basically coding TB himself for free when time permitted, but now with OOTP basically beginning development of the next version immedicately after the latest release is patched he is right back to work on it. Of course money still plays into it since OOTP is the money maker, but again, if he wasn't programming 8-10 hours a day on the Baseball, he would be spending a few hours a week on TB.
I know he didn't plan it like this and he bought the rights because he loves the game, unfortunately the next year won't bring us anything new.
I am retiring from Coaching after this Football season ends so I will only have my "day" job then. Maybe as a hobby I will learn C ++ in my free time.