That's not why those things died, though. They died because smartphones stopped supporting them, and that combined with advancements in JS engine speed were all

That's not why those things died, though. They died because smartphones stopped supporting them, and that combined with advancements in JS engine speed were all it took to get brother vendors to scrap the buggy, security-hole-ridden plugin ecosystem. WASM should hopefully not be bad from a security perspective, but the up-front performance penalty of early demos in downloading megabytes for hello world was painful. More purpose-fit, smaller modules ought to be broadly useful but I'll not be holding my breath. Anything that needs to take over a canvas probably isn't going to be widely adopted outside of some niche things like visual design tools or the occasional game.