A lot because quality assurance testing. There is little to zero automation available and supporting three platforms (more, if you want to support distros other

A lot because quality assurance testing. There is little to zero automation available and supporting three platforms (more, if you want to support distros other that Ubuntu) means tripling your already time consuming and expensive testing effort. I'd love to see more games in Mac, bit understand why that is rarely the case since I also want a quality product and would complain if I got a poorly tested port.