On the subject of regulated industries, there are some that require some some of qualification.
Eg:
  • Medical/Health (but we still have //lel services like homoeopathy?)
  • Law
  • Manufacturing and mining (eg. fork lift drivers, heavy machinery operators etc)
  • Building industry
  • Transport

But other industries (eg. IT, software etc.) require no qualification at all.
Yet, I've worked in IT / Software development since the 70's and am a professional by any measure (i.e. experience, career results, peer recognition etc).
However, there are still some shonky IT shops (much less than the '90's).
Still, anyone can setup a PC sales/repair/service shop, even do shonky web site developments.

Photography is no different.