Jacobus:NFSCo serves a purpose, at no public cost
True now, but not historically. I'm a bit dubious about their value in fact, though they may suit some people:
We are smallholders, my wife is a vet, and so we don't have deaths on-farm more than once in 3 to 6 years if that, so the membership fee made the scheme uneconomic.
In any case the charge made by our local hunt kennels was less than it would have been even with NFSCo membership, and I think this is true in very many places.
Large livestock units can justify their own incinerators, or a share of a mobile one.
I'm sure there are farms where the NFSCo is the best option, but my gleaning of information suggests this is quite rare.