Load time tolerance is proportional to session length and focus required. People put up with GTA V Online taking tens of minutes to load the "micro"transaction store contents [1] because when they sit down to play online they are going to spend a couple hours in near 100% focus.
Compare with a mobile game, even a 3D one, where sessions are usually in the tens of minutes themselves, a lot more effort is spent optimising load times and it can be a competitive advantage.
Lagrange cold-starts in roughly a second on my M1 Mac. That's roughly the same as Terminal.app on the same hardware.
Games tend to take a lot of time to start up because they need to preload heavyweight data, such as textures, models, maps, sounds, video. You don't need any of that in a desktop application.
The only real difference in consideration is load-time. Gamers seem to be more patient than what I am with app load times.