Piracy is just the excuse. What they're saying is that Amazon will allow a collection of corporations (including Amazon) to decide what you're allowed to do with the hardware they pretended to let you buy.
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The movie/TV companies sell their show to the SVOD platform that offers the most in the territory. Or it's developed by the service themselves. So if you have to subscribe to a handful of services to watch everything your friends recommend.
Most of us can afford one music service. If you're forced into 5 streaming services a lot of people will just pirate. And even for those that do pay - the "we'll show this in the UK a week later than the US" means unless you pirate it, it's spoiled on social media within a few days.
The economics work out just fine: the net result would be paying the entertainment industry less, which may be what people want.
But all the complaints I see are about not wanting to pay more for more content.