Pharmaceuticals build their entire business model on coming up with a unique product that can only be supplied by them... until the patent expires. They intend to make up their research and compliance costs and more in that short window of time. This would be an example of inelastic demand where there are no competitors, no?
They also try to find sneaky ways to extend their patents (by making minor changes to drugs) and also block generics being made available. For all the talk of medicine and treatment they are there to make profit, not cure people. That just happens to be a side-effect of the industry they are in.
It also means that treatments for rare and exotic diseases are not pursued as aggressively, as there simply isn't a market.
Free market, supply and demand may cause unacceptable gaps in service delivery.
True, the same things happen with cell phone coverage and bus services - everyone wants to provide services to a lucrative city but not regional areas and that is where you need government to step in and provide regulation to ensure coverage and fair prices.
Yes, people in the country are subsidised by people in cities - for phones, cable, utilities, roads etc...
Why should healthcare be excluded from a system that works for less important things?