I just don't think that's true in a world where Marvel Rivals was the biggest launch of 2024. Live service games like Path of Exile, Counter-Strike, Genshin Impact, etc. make boatloads of money and have ever rising player counts.
The problem is that it's a very sink-or-swim market - if you manage to survive 2-3 years you will probably make it, but otherwise you are a very expensive flop. Not unlike VC-funded startups - just because some big names failed doesn't make investing into a unicorn any less attractive.