Well, it's feasible if you fork the web instead. If a significant number of people want draconian measures to be taken, and they converge on a search engine that can exclude the non-compliant, then the new standards have a chance of catching on.

Suppose I say I just want to eliminate javascript entirely - that's not feasible to enforce, but if I could just search the non-javascript pages out there, then a new way of doing things can be bootstrapped.