DRM is in every browser, and even in the HTML5 spec.
Every computer/monitor that supports HDMI already has DRM included in it designed to prevent you from making unauthorized copies of high quality video content. Like all DRM it's illegal to bypass that.
Starting with Windows 10 (although a windows update later added it to 7 and 8) Microsoft collects your filenames. Apple already wanted to scan their customer's personal files for illegal content.
We're much much closer to that reality than I'd like. There's already very little hope of getting away from DRM.
I remain entirely unconvinced that I will somehow be stopped from putting together unencumbered Linux machines. I am unconvinced that anyone can prevent me from enjoying and sharing the terabytes of content I already have. I am unconvinced that HDCP strippers will stop working for existing content. I am unconvinced that people around the world will be entirely prevented from copying new content.
HDCP strippers will probably keep working, but committing crimes like circumventing DRM only gets riskier as our computers log and report back connected devices, what we're doing on them, and companies can buy up our purchase histories.
I do admire your optimism, but I've seen our freedom increasingly restricted over the course my own lifetime too. For example, the idea that Microsoft was overstepping their boundaries and taking inappropriate liberties with our computers has been around since Windows 95, but there was a time when I never thought we'd see a day where MS was openly snooping on user's personal files or plastering ads all over their OS yet here we are.
Don't underestimate surveillance capitalism and the desire companies and governments have to restrict what we're able to do with our own devices.