Completely agree. However there are a few exceptions to the rule, for example Minecraft was written by one person (Notch) which was successful before he expanded the team and then sold it off to Microsoft.
I think the game industry has a lot of extremely talented “10x” developers that are also underpaid and overworked.
That people are willing to put up with the terrible conditions in the game industry is an example of how interesting and fulfilling work is many times more attractive than a good salary and work/life balance. A boring SAAS company will probably never beat a game company with a fraction of the budget when it comes to hiring/retaining the best devs.