Some of the incidents which occur in the Alps suggest that, far from inhibiting call outs, a paid for service funded via insurance may actually increase their frequency, because people take the attitude that “I’ve paid for it, I might as well use it”. There was a case recently where someone was prosecuted for it because a hut guardian overheard them planning it the previous evening. That’s not the first time I’ve heard of people displaying that attitude.
There seems to be very little appetite for a paid for service amongst the MRT themselves, nor from bodies such as the MCofS BMC etc, so I doubt there’ll be any pressure to implement it from the government anytime soon.