If you are already paying for the streaming service that offers the content and they restrict you from watching because of your OS are you harming the industry by downloading it? Nothing is stopping you from buying a 4k webcam and recording your computer monitor.
You're already paying the monthly fee to stream it, you're just streaming it in a more friendly way. Granted if you cancel the service, you should delete the content.
Many won't though and that's the problem but that problem is caused by the fact that you're being restricted in the first place.
a 4K webcam recording of a screen will produce a trash copy that isn't notably better than ripping off the 720p you can already screen record.
I'd love to explore this comment further:
Nothing is stopping you from buying a 4k webcam and recording your computer monitor
Video DRM that doesn't protect the stream all the way through to a decryption key embedded in your eyeballs always seemed somewhat futile to me.