A note on monopolies

When a large retailer such as Walmart uses it’s weight to squeeze prices this is celebrated for it’s ability to bring products to people at lower prices, however when a state owned monopoly does the same (in the form of price caps in the Canadain medical system) it’s causing inflation elsewhere. I don’t doubt the later, but it does make one wonder, do large chains inflate the prices of goods for independent retailers by squeezing the prices of large orders?

as usual, someone has probably already looked at it.