More efficient for the mega-vet, sure. Once you've consumed all the competition, there's no need to compete on price anymore. Prices can go up quite a bit befor

More efficient for the mega-vet, sure. Once you've consumed all the competition, there's no need to compete on price anymore. Prices can go up quite a bit before it becomes economical for a new entrant to take a risk in the market. Except maybe another mega-vet. See what Walmart did to communities and small business. Efficiency is not all roses.