A fundraiser and/or financial grant to a foundation like gnome, or a distro that makes a11y a priority, is probably the best way to approach it. Without the financial investment, many contributors just aren't considering or even aware of issue.
The distributed best-effort approach works ok for some things, but is at a disadvantage for supporting holistic standards across independent apps.
The distributed best-effort approach works ok for some things, but is at a disadvantage for supporting holistic standards across independent apps.