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Google's Web DRM is Worse than I Thought...
(www.youtube.com)
This is a most excellent place for technology news and articles.
Once entities like tax authorities require it for filing your taxes (or any other thing you absolutely have to do), that's not really an option any more.
The tax authority in my country already uses a proprietary protocol and client
https://de.m.wikipedia.org/wiki/Elster_(Software)
It's funny that they name that protocol after a bird that's associated with theft.