I'm not a practice owner, I currently teach at a vet school and locum but still think vet fees are nowhere near that level (perhaps some OOH companies).
When I was full time (and things have changed a little thanks to covid):
Phone calls were free
First consult (15min) was about £36
Second and follow up consults (15min) were meant to be about £25-30
Operations varied... Closest thing to a simple 10 min op is probably a dog castration but that really depends on the surgeon and the dog, varied between £120-200 including GA, drugs used, surgical time and materials, post op pain relief, two post op checks and nurse to monitor GA while vet operating. Neuterings are usually pretty much a loss leader though, across the industry, with the hope that clients will stick around providing custom on and off for the next 10+ years...
OOH place I often locum for charges a lot more for most things but the whole point is it's out of hours and meant to be emergencies only...
The major providers are big companies with lots of non-income earning staff who need paying plus pension fees, on top of the usual like insurance, ground rent, membership fees, drug costs, equipment and maintenance costs. Big companies often owned by/are investment companies who want a return as well. Vet industry is seen as recession proof thus a good investment. That being said most vet businesses are not particularly profitable due to various overheads.
It would be nice if most vets earned what people think we earn, suspect that private human surgeons earn significantly more but still not as much as we might think.