Indeed cost is the major reason (sadly), which is way beyond the means of most people that I know, even with equine insurance.
And as heavy as they are, it is a lot more stress on their bones than it would be on ours. Just a thought
I think that is one of the bigger reasons for not going through with broken bones in horses. Its not like you can cast up there leg and stick them in a wheelcheer for a few months to keep weight off it
Its a lot of stress for them to be using 3 legs if its a leg break of some sort, not like a cat or dog that can cope with a missing leg, horses need all 4.
Horses and all animals really simply don't understand the ' we are trying to help factor '. They will go through the pain and stresses of the healing process not really knowing whats going on, for some its to much ( but of course some can get through it fine ).
Im not sure bout other countries but I don't even think NZ has facilities to cater for such cases properly any way. Wether its certified vetenanry clinics or peoples back yards.
Fractures are one thing, but a full break would proberly be a bit much for the average horse person to cater for.