Of course there are things that can be done, and some things that are done. At least in the US, the livelihood of chiropractics is controlled by state licensing boards, insurance companies, and university accrediting agencies.
A few years back, Life University was essentially run out of business by an accrediting agency. The accrediting agency (which I think was fairly newly formed) established new standards that required classes on teaching students when to refer patients to traditional medical doctors. Life apparently took some offense to the implication that chiropractors couldn’t cure anything and failed to teach the courses which resulted in loss of accreditation. No accreditation means students can’t get student loans and graduates can’t get chiropractic licenses in most states. Which basically means the university closes and gets itself a nasty class action lawsuit from upset students.
New York, and perhaps some other states, have censured chiropractors for providing “treatment” to people with no symptoms. Censure boils down to loss of license, loss of business, loss of reputation, and the end of your chiropractic career.
Insurance companies can influence the livelihood of chiropractors by controlling what types of “treatment” will be covered by the insurance.
From the little bits of news about chiropractics that I've seen, things seem to be going a bit downhill for chiropractors. But chiropractors have large organized associations that can carry hefty political weight.