In a well functioning country, regulation is one of the best ways to control this.
Better regulation would force the manufacturers to spend R&D on alternatives and push down the prices so that the rest of the world can also afford a cleaner alternative. Even if that takes time, we would at least have a huge reduction until we have the right tech at an affordable price for the developing world.
The world is a huge place and many countries will never have good regulations due to corruption/lobbyists and continue to pollute. The only way I see regulations would work is if the first world governments, which are the largest consumers, were willing to impose import restrictions, but that would go against the ideology behind the global market. It would also risk retaliation where the affected country could block exports of rare earth minerals and other critical resources.
The US market is one of the largest influencers, and would need to get on board. I'm not an American, but given the political climate in the US right now I doubt they could regulate it effectively.
Within the group of consumers, there will always be only a small (if not neglible) fraction that does care and has the means for a boycott.
A bit of organized activism can force regulation and will have a way bigger impact.