Deregulation is not necessarily a bad thing.
Best example of this is NIMBYs in the Bay Area abusing hearings to block affordable housing, or making it as expensive as possible to replace single family homes with denser construction.
And all of the passthrough towns between LA and SF who have gummed up the high speed rail in court because the state kneecapped its own eminent domain rights through well-meaning self-regulation.
Regulations or the lack thereof aren't good or bad in themselves, but its easy to see why people on all sides of every issue want to make it so; saves them from having to actually argue the merits and demerits.
And nothing is ever simple - the second and third order effects of both regulations and deregulation are hard to know, let alone argue about.