alt Hacker NewsI 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.
Software accessibility is bad for business - that's why it has to be legally mandated. There's no firm difference between "accessible", particularly to screen readers, and "amenable to end-user automation", and the latter is anathema to businesses.
As for the styling and fonts - it's all a bunch of low-key trade-offs here. The businesses want to exercise total control over the end-user experience, for sales/marketing and branding reasons. At the same time, going off the beaten path quickly makes development costs skyrocket.
Flash was a good choice back when all visitors were using a PC and there were like 3 different screen resolutions to choose from. Once laptops gained popularity, this started to shift, then pre-iPhone mobile briefly became consideration, and Flash stopped being sufficient; then iPhone came out, killed Flash, and started an era where every visitor has a different screen than the previous one. "Responsible web" became the cheapest option, and you can see its evolution as a trajectory towards giving more and more control over experience to developers, and less and less to the users.