gaming studios are full of people who are squarely in the target market for the product they're developing. this has downsides but in many ways is a huge edge, so in a sense ageism seems more justifiable in games than elsewhere as a close proxy for audience understanding
Game dev salaries seem to be really bad compared to the rest of the industry, but so hyped and "cool" that younger people keep fighting over those jobs.
I turned down a job at machine games because of really mediocre compensation compared to what I had before, working at a rather unknown startup.