On a strictly pragmatic view, you can steal coins, get away, and no one would know the wiser, but the exact same thing can happen to you and you can't come back to the community for help. The thing you would want to do is get crowdfunded for something you are absolutely passionate about, since all the money in the world can't really make someone happy unless you're doing something with it. You get a system worked where the Bitcoin is just motivation or icing on the cake, and you can go a lot farther than anything you'd put your mind to on your own.

That, and on an ethical viewpoint, you are a douche-bag if you see your customers as resource to be farmed and nothing else. Don't be a douche-bag, or else three spirits will tie you to your bed and beat the living crap out of you come Christmas Eve. Or something.