Docker was not the only container based system back then and we did have other projects for running arbitrary code in the browser. Were they as good as WASM? No

Docker was not the only container based system back then and we did have other projects for running arbitrary code in the browser. Were they as good as WASM? No but the browser wasn't as good either. Point is it's not just WASM that makes him feel that way today. It's pretty damn hard to roll back your mind 12 years and then apply 12 years of innovation from the side and make accurate predictions of what you would have done differently. Just like "if we had internet in the 19th centry", it implies so much more.