I don't quite see how this is different from, for example, sales tax.
Or, actually the status quo: if you're a Polish company organising a music festival in Italy you follow Italian law.
That principle won't change just because it's a streaming service, for the obvious reason that anything else would lead to content distributers shopping around for the cheapest jurisdiction.
Regarding the distributers' wish for market segmentation: That's a perfectly understandable reason, and it will become illegal rather soonish. Sure, you can chose you customers. But you won't be able to make their nationality part of the equation much longer.
The public will profit rather obviously. Personally, I don't even care about any changes in pricing. Most annoying are companies segmenting the market along borders, and then never actually signing a local distributor. Or somehow only selling the translated movie etc.
One caveat for practical reasons will be sports rights. It's just not possible to set a single price for, say, the British Premier League games that works everywhere: either it's but a fraction of today's prices, or nobody outside the UK would consider buying a subscription*
* UK example for demonstration purposes only. Will not be implemented. Search for better examples underway.