[tomkat0789]

I think that's another dimension of the control. It'd be controversial to make a law saying "we're restricting how you repair your air condition", but if you instead said, "for your safety, you need to have a signed and stamped form B-6 to repair your air condition" you can achieve the same effect by creating layers of bumbling bureaucracy. Everybody is hostage to insane rules that obfuscate your control.