I'd add to that, with the disclaimer that I'm neither a game developer nor a computer scientist:
5.) Creating video games is extremely labour-intensive, which is why there are so few Free and Open Source ones
6.) Game-development is an infamously awful line of work. High competition, abusive working conditions, and inadequate compensation. If an academic wants a hobby that overlaps with another line of work, there are plenty of choices.
7.) Only a few areas of computer science have anything to do with game development
5.) Creating video games is extremely labour-intensive, which is why there are so few Free and Open Source ones
6.) Game-development is an infamously awful line of work. High competition, abusive working conditions, and inadequate compensation. If an academic wants a hobby that overlaps with another line of work, there are plenty of choices.
7.) Only a few areas of computer science have anything to do with game development