Unfortunately none of the things you listed are what page vendors want you to have. They'd very much prefer you didn't. On the web, they're just too hard to prevent, so most don't bother.
I think that must be false. Serving the page as a static image was possible from the early days of the web, but vendors (mostly!) moved away from that as features like web fonts became available. I guess Flash was the big remaining exception. And remember Java applets? But even now as rendering to a canvas is possible, enabling animation and interactivity without necessarily including accessibility, websites are mostly not doing that. Accessibility is good for business. And sometimes it's legally required.
I think that must be false. Serving the page as a static image was possible from the early days of the web, but vendors (mostly!) moved away from that as features like web fonts became available. I guess Flash was the big remaining exception. And remember Java applets? But even now as rendering to a canvas is possible, enabling animation and interactivity without necessarily including accessibility, websites are mostly not doing that. Accessibility is good for business. And sometimes it's legally required.