I'm genuinely curious about your position, it's interesting.

But I can't figure it out what it'd look like in practice, might be hangover, might be I need more caffeine, whatever it is, it's on me. Don't read following as "you're saying X and thats silly!"

(A) Are consumption rates in general unsustainable?

(B) If (A) is no, are consumption rates of specific items unsustainable? For example, is the legislation you're thinking of like the deprecation of plastic bags for paper? Or something that covers a much wider amount of consumption?

(C) If (A) is "yes" or (B) is "more global", at huge scales like an economy, legislating quotas or rationing or anything at all, in practice pushes activity onto black markets.

If the concern is changing individual behavior, and individual behavior isn't changing on it's own sufficiently, what sort of legislation would change it?