A few current issues/examples that for me support sanctioning:

Club/trainer fails to attend with fighters at a show, no explanation, no excuse. Now on a regulated show action can and does happen, that person gets possibly suspended and other orgs support it, therefore 'justice' if you like has been seen to be done. If that happens on self regulated 'world's hardest tuffguy' promotion nothing will happen, that guy/club will just go off to spoil the next show up the road

Fighter gets KO'ed one week on unregulated show, fights next week, happens again. Now this is not fail proof with any org, but the work believe me does go on, fighters are medically suspended and if they fight during that period they will be given lengthy bans which will be upheld by the other orgs.

Shows run by the major orgs DO NOT go ahead without doctor, paramedic crew AND ambulance. There is no guidelines laid down for any of the self regulated promoters. Now they may of course have all that but they don't have to is my point and then maybe I'm not going to read in a newspaper report again the line 'treatment was given to the downed fighter whilst they awaited the arrival of the ambulance' FFS

Ok those are just a few for me, but couple more things. People are bringing Glory, K1 etc in as examples of brand shows that don't need regulation (not entirely correct as action promos has pointed out) but those really are not where the problems lie as they actually make up just a minority. The real issue is with all the others whose 'authority' goes no further than the town where the shows are held. Made up rules, ridiculous titles (thou don't want to get too bogged down on titles), self appointed officials, etc etc. That is where the real problem lies and as I said above they do it themselves to save money full stop!