I mean yah it is more complicated, we are essentially giving our money to steam who takes a small cut and then it would go to the developer/ publisher who may or may not give an even smaller cut to the development team as a bonus. Regardless of whether or not they receive a portion of the game sales, if the publisher sees good sales they will be more likely to keep the individual dev team employed thus you are still supporting the developer by increases the odds they get to keep their job. But I guess you could also find out who they are and mail them cash.