“Because the Arkham games are not a yearly rehash with barely any changes.”

This is true, it takes them more than a year to rehash the games with barely any changes.

To be honest, by buying through iTunes or other big-brand streaming services that let you buy music, you’re only supporting the streaming service. Sites like Bandcamp pay direct to the artists, with the site only taking a small cut. iTunes and the like take a massive cut, and smaller artists make nothing from it.