If you mean 3-5, or less than 10, raw manufacturers, that's probably wrong. I don't know about more than 10.
More are working on it, so there will be more, not less.
Whether that's good for consumers is another question. It might mean lower quality raws.
Even if they tried to stop it completely, it'd just be a game of whack-a-mole. The quality might drop for a bit, but that's the worst they could do. Governments don't gain much by spending resources on these 'problems.' They'll just cooperate enough to look good.