Professional and power user software is always keyboard-oriented when it makes sense, I don't see it being ignored. Microsoft even addressed the criticism that Windows was largely not possible to use from keyboard, and massively improved it starting with Win10.

> But the broader trend in GUI apps has been to target marketshare not deliver productivity for keyboard users.

It's not a trend, it's a fallout of Electron being the default choice. Devs that use non-web UI frameworks are aware of keyboard navigation, or at least don't disrupt the builtin thing. And of course what devs that don't target power users tend to do is irrelevant to GUI vs TUI debate in the context of power users.