Accessibility gets filed under "compliance" and that's a shame, because it's really a sales feature.

Bigger tap targets help everyone with a cracked screen and a moving metro. Proper contrast helps everyone standing in Dubai sunlight. Captions help everyone scrolling on mute in a waiting room.

The curb cut was built for wheelchairs; it ended up serving every stroller, suitcase and delivery trolley in the city. Websites work the same way. Build for the edge, and the middle says thank you with their wallets.