Never trust
Never, ever trust any company which says "You don't need to introduce laws to make us do this because we're going to do this anyway."
There are two reasons.
1) If they really were going to do it anyway, then the law will make absolutely no difference to them. So they have absolutely no reason to oppose the law.
2) If they really were going to do it anyway, then the law will prevent their competitors gaining unfair advantage by not doing it.
So any company that says "Don't introduce a law because we'll do it voluntarily" is a bunch of lying, fucking arseholes who cannot be trusted. Don't do business with them unless you have no other option.