We have had GPU access in the browser for more than a decade now. Are there actually any broadly used applications for it? Everything I come to see appears to be some kind of tech demo that lags behind from what native PC/console games could do 20 years ago...
There’s also a whole universe of Web based names (see facebook). In the VR niche I maintain https://moonrider.xyz/ that has had 100k MAUs sustained for 2+ years. Not sure if it qualifies as large scale but definitely non negligible.
I guess Figma uses WebGL next to WASM but not sure. There are some pretty successful gaming niches like Facebook Instant Games where pretty much all games use WebGL via some sort of middleware, even though most games are simple 2D puzzles. In general, that those web 3D engines (three.js, babylon.js, playcanvas, pixi, etc.. ) even exist for so long must mean that there's some sort of demand for them.