btw, I wish the Indie wouldn't go for black background and red type: for (some of ) those of us with visual handicaps, it literally requires a bloody microscope to read the most important words Please prioritise accessibility over arty-farty !
While you're quite right about website accessibility (it's a criminal disgrace, considering accessibility was pretty much baked into the first standards for HTML, and have been developed considerably since then) you can apply client-side stylesheets to override theirs, and there are apps like screen magnifiers and text-to-speech readers.
In my role, I cast this rune 10 years ago: as the internet becomes the accepted default medium, the older users (for example people who may have been 50 in 2000 when they started surfing) are going to need some adaptations, or they won't be able to spend that lovely lolly they've so thoughtfully stashed away. And in an example of where everything goes wrong, it wasn't possible to justify any extra expense predicated on 10 years in the future. Probably still isn't ...
The next big thing in phones/tablets will be changes to the visual interface (more users, worse eyesight) and enhanced/extended battery life (because they're so essential for a full days use).