the main challenges facing web games are: 1. hard to monetize 2. lack of mature tooling (Unreal dropped Web support, Unity pretty much has just 1 FTE maintain

the main challenges facing web games are: 1. hard to monetize 2. lack of mature tooling (Unreal dropped Web support, Unity pretty much has just 1 FTE maintaining WebGL support, and Godot is still catching up) 3. mobile UX sucks (try playing a game in Safari on iOS) not to say it isn't possible to make really cool games on the web. and some have been quite successful recently, like FNF. but it's a verrrrry tiny slice of the overall games market, and has been shrinking over time since the death of flash and the rise of mobile