"Let the problem fester until the negative externalities build up so much it overcomes the coordination problem and companies are subject to the same coercion (but through 'market forces' so it's good), one day, eventually, maybe" isn't a meaningful argument against legislation.
The problem is that these consumers realize they'd dislike some things of a product long after buying it (and often it isn't the entire product that is a problem, so someone might still dislike a lot some aspect of a product while liking another aspect of it).
And others may not even realize the negative issues at all but still they create network effects that drag other consumers along the ride anyway, regardless of if they like it or not.
