why do you buy games? You can download most games for free...
That's different. In the music industry, the artist is the primary winner as far as sales go. If Album A sells 1 million copies, then Artist A receieves a large portion of that.
In the gaming industry, there no smoke and mirrors. Hard work, effort and talent are required to make a great game. Say Game A sells 1 million copies from a company of 50 developers. That's split between the publishers and developers, as well as many other people.