To which the answer should be, "no, but Canvas might have, and here's why it didn't".
Actually, that would be an interesting article to me, because in retrospective, I'm surprised we haven't seen more Flash-like Canvas-based sites. My suspicion is that Canvas's interactivity story isn't yet strong enough: you kind of have to roll-your-own interactivity, pending technologies such as addHitRegion() et al. [1]; most notably there's no support whatsoever for text-based interaction (e.g. text widgets). Hence why most web apps which would have been Flash a decade ago still stick to HTML instead of Canvas.
My point exactly.
The author is making the wrong comparison. WASM is JavaScript all over again, and, the HN NoScript crowd aside, that's not going anywhere soon.