In the end the right holders sell their content multiple times, often even multiple times within a single market. Now if everybody in the world can get US Netflix content the right-holders are the ones who will have problems selling content in other markets.
Ah, yes, copyright. The ultimate government entitlement program.
It's easy to see why Netflix and Amazon are taking the seemingly-unintuitive step of developing their own shows. They're privy to the greed and stupidity of the incumbent content owners in a way that few of us ever get to see. While the studios' greed and stupidity is a problem for Netflix and Amazon during contract negotiations, it also must look like an opportunity.