> And a DRM for website instead of only video DRM that exists, so that user cannot view source code, and no extension can block the ads

Good luck with that. You could render an article into a DRM'd video, and utterly destroy SEO, accessibility, readability, and the website's whole reputation.

"DRM for news articles" makes zero sense. Movie DRM works because HDCP decrypts the video on the display. ("works" - pirates got the private keys anyway :D) You can't DRM software on a general purpose computer. You can try, and it would be cracked soon. Even the best attempts (Denuvo) get cracked.