Nah, it's not incompatible. I do as well want to work on my own projects on my own terms and I couldn't care less about my employers' product. At the same time I know how to play well as part of a team and get paid for it. It's just two different hats I wear at different times of the day (e.g., 9-5 hat is "team player, let's be nice", 5-8 hat is "let's do something that actually makes sense not like that stupid project at work")