The problem is the controls. I didn’t realize how much of a problem this is until I started playing some multicades.
To do it right you need a machine with a four way stick, an 8 way stick, a track ball, and a spinner, and of course a bunch of buttons. And it’ll still never work right for some of the best games (spy hunter, pole position, Star Wars, etc.)
They are kinda neat but in my experience just don’t do a great job of their intended purpose.