There is no reason that Netflix can't sell their services in other markets
Except the part where Netflix didn't want to pay for global distribution rights (and do the necessary localization such as subtitles, for every regions they sell to) from the studios?
If Netflix bought and paid for only US distribution rights, and then take subscriptions around the world and stream the movie worldwide, then the studios would have a hard time finding distributors in, say, Asia. Who are willing to invest in the effort to do the localization and when a portion of the market had already seen the movie directly from US Netflix?
Why else would the studios bother to pressure Netflix, which is basically their reseller?
If, instead, we are talking about Nike shoes, and the US distributor take direct orders from, say, Japan, then that distributor would be getting pressure from Nike pretty soon to stop. Same thing.