There is a fundamental asymmetry where it's much harder to repeal a law that harms a bunch of people a little bit to benefit a few. The few can afford to invest resources in defense and have a much bigger stake than the many, who individually have no real reason to care.

Public outrage works like a line in the sand, where the many get upset far out of proportion to what their stake is, to prevent death by a thousand cuts. But once you cross it, the defense crumbles. There's no model where seesawing back and forth between less and more copyright works: the many just can't organize as well as the few. That's why lobbyists only have to win once.