It isn't capitalism. It's politics.

I love it when a business makes the world better and turns a profit. They can use those profits to keep making the world better, instead of (for example) running out of money and shutting down.

Or, to make it more concrete: I got some really tasty bread from a bakery this morning. I'm happy that the bakery made a profit from that, because otherwise they would have shut down years ago and then I wouldn't have been able to get fresh fancy focaccia. I wasn't exploited; I was fed.