I think you missed the point...
No one is saying the tools should be regulated, nor the ability to use them but many trades are regulated, licensed or have guilds for which you must prove your mettle or worth before being allowed to join.
Actors have a Guild and Musicians have Unions.
Both are "artistic, free expression" activities just like photography but both have organizations that set a very high standard for membership and have a major impact over when and where you can ply your craft (at least in any meaningful, long-term way.) But, just like photography, there are amateurs and part-time actors and musicians as well.
But, would you pay the same dollar amount to see someone's garage band play a major arena (with garage band gear) or to see the Smithfield Players perform Rigoletto at the Met (without proper sound reinforcement) as you would to see a major act or the house company perform at either? Moreover, is it fair for them to expect you to?
Not exactly true, and not a good example for this discussion. Anyone off the street can sign up to be a member of the Screen Actors Guild as long as that person has a job or proof of an upcoming job in either of a few related fields...it has nothing to do with ability/skill/standards. Its just a means to control who gets work as an actor and who doesn't, and who gets paid how much at a minimum. Again, nothing to do with skill or talent...just limiting employment to a certain group. You don't join, you don't work as an actor.
But like I said earlier, the client/consumer needs to do his/her part with regard to due diligence...an educated consumer is the best customer. For the record, I'm not a wedding shooter...

). I feel, the present day camera technology and usability are made easy that any one can have their hands on. It is like computer field.

