I don't think they interfere too much with the market in the case of (say) legislating against companies who produce diseased chickens.  However, workers, at least in America, lobbied their bosses for health and safety regulations privately in the past (in addition to lobbying for legislation) back in the 19th Century.  In many cases, companies improved standards to avoid Congress and the president taking action.  (They took action anyway.)  Workers also have the ability to sue companies for these sorts of things.

Nonetheless, your point is well taken.

Conservatives want live babies so they can raise them to be dead soldiers. - George Carlin