Seems like a solvable problem in the medium term - Electron apps are, in effect, a web page; build an accessible page, the Electron runtime _should_ be able to join the dots same as a full browser does.
It seems like a lot of frameworks used with Electron are the "reinvent every HTML tag as a component with divs" variety. So unless a developer hangs a bunch of event handlers off some widget they don't have default handlers for a lot of accessibility. If they used a real tag they'd get a bunch of free accessibility/functionality but instead they use components.
