Pierre-Loup Griffais, one of the creators of the Steam Deck game console and the SteamOS Linux distribution, in an interview with The Verge, said that in addition to employing 20-30 employees involved in the Steam Deck product, Valve directly pays more than 100 open source developers involved in the development of Mesa drivers, the Proton Windows game launcher, drivers for the Vulkan graphics API, and related projects such as Steam for Linux and Chromebooks.
Source: opennet.ru