We already have a way one way to render things on the browser, everyone. Wrap it up, there's definitely no more to explore here.
And while we're at it, I'd like to know, why are people still building new and different game engines, programming languages, web browsers, operating systems, shells, etc, etc. Don't they know those things already exist?
/s
Joking aside, what's wrong with finding a new way of doing something? This is how we learn and discover things.