Wayland protocols are an almost ideal way to create intentional incompatibilities and network effects. see also xlibre, which is building a weird fucked up ecosystem around itself even though it’s broken and pointless.
So in other words, they're just cargo-culting "network effects" that they heard about in second-hand YCombinator propaganda and Zuckerberg biographies, and assuming that's both a road to riches and a necessary part of a technical culture