Here in Ontario , it’s more about cost to the dealer / campground to provide the service. When regulations were changed , maybe 10 years ago, the cost for small operations became ridiculous, The Campgroud owner said that the initial inspection, new mandatory equipment would have cost him $25000 and then yearly inspections licences of $5000. Plus yearly training for any staff that would be doing refills. Good Bye propane.
Oh yes , he would have lost a considerable number of campsites, since residential units were not allowed in a certain radius of the refill location. Campsites, in the eyes of the inspector, are considered residential units