It's often the other way around: regulation is popular among people inside the regulated industry (it keeps competitors out, while being treated as "just business as normal" by employees of the regulated industry), while being unpopular with potential new entrants on the outside.
The only industries that really fight regulation are those where there's currently a mad scramble of new startups trying to gain position (see eg. dot-coms in 1999 or crypto in 2019). Nurses don't fight HIPAA, bankers don't fight margin requirements, contractors don't fight building codes, brokers don't fight broker licensing, and daycares don't fight safety standards.