My restaurants are never opened on Thanksgiving; I want my staff to spend time with their family if they can. My feeling is, if I can't figure out how to make money the rest of the year so that my workers can enjoy the holidays, then I don't deserve to be an owner.
I think a lot of times it's not money that's the primary motivation factor; it's the passion for your job and the professional and personal satisfaction that you get out of doing what you do that motivates you.