i love this. i don’t understand why web games like this aren’t more prevalent

They are. There's a LOT of web games on itch.io. It's just the typical challenge with over saturated markets: publicity.

They are incredibly hard to market, I built a web game and it’s so hard to get traction lol

And it’s quite a bit more polished than most web games. Too complex though so I’m fixing that.

Competition. Marketing. Expectations.

In the 1990's and early 2000's I loved building web and flash games, people had lower expectations, getting notice was easy (StumbleUpon etc) and there wasn't a lot other choices.