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Have you never heard of the Great Firewall of China? That is one way, diplomatic pressure is another, and yes, fines are another. I'm afraid you'd have to be living in a complete backwater if you think that anything done on the internet doesn't have to pay tax, adhere to local laws, etc. Have you ever tried Netflix in the EU? It has no where near as much content as it does in the US. Have you ever heard of TV Shack? It was a streaming service setup by a UK student who was extradited to the US for not complying with US copyright law.
I'm afraid you're wrong, the internet is no longer the wild west that it used to be. Governments all over the world are legislating over it, some oppressively, i.e. North Korea, some pro-consumer, i.e. GDPR, some pro-business, i.e. Link Tax (that is their intent, but they are idiots, it will just mean that Google won't work in the EU, and that will bring EU business to a halt if they let it through). Some of these changes are good, some of them bad, and as with all politics, it's everyone's opinion as to which is which.
My recommendation to you, please don't break GDPR rules, the fines are enough to make the biggest company's eye's water, if you live in a country with strong diplomatic relations with the EU, then it's very possible that deliberately breaking the law of the EU will end badly for you. Whatever lack of power you perceive the EU as having, I promise you it's an illusion, the EU collectively has a GDP that is comparable to the USA, it's a major world economy.
Finally, it's diplomatically not a terrible idea for Canada to be part of the EU, it's not been done yet, but it's something that the USA might push Canada towards should they continue to stress their relationship. If they decide that they want to join the EU then a major part of the EU allowing that would be whether we can trust Canada diplomatically. Extradition and law is a major part of that.
The take home from this thread is simply a message to Floatplane to check GDPR and ensure they are complying.
It sounds like a fairly prudent bit of advice given the headaches that can ensue regardless where you live. Especially if it's a simple over site that can be easily fixed.