Handwritten HTML with limited tags works just as well for many purposes (just forbid div, span, and a few others and the complexity you see in most webpages evaporates). The important part is using a text-based format from which information can be extracted even if the fancier display protocols become obsolete.

For some things, you can get non-DRM downloadable files, and those you do own. They’re very much the minority, though, and mostly limited to smaller, less-popular shops where they do exist.

I would very much like a law that says that streaming services and DRM’d downloads are required to use words like “rent” or “lease”, never “buy” or any synonym thereof.