The core devs were all paid to work on it when I was still active. Not sure how many of the gnome (mutter) people are paid. Last I checked, the nvidia support

The core devs were all paid to work on it when I was still active. Not sure how many of the gnome (mutter) people are paid. Last I checked, the nvidia support was donated by nvidia (paid) for both KDE and Gnome. I think KDE got some work sponsored by valve (before gamescope), though I'm not quite sure on that. Overall, outside the sway/wlroots group I was a part of at the time, people generally worked adjacent or directly on wayland for day jobs.