In January 2024 zed was open sourced, with only mac support. One week later Dzmitry Malyshau showed up with a prototype renderer for Linux. In July 2024 official Linux builds were available mostly thanks to community contributors. The swift Linux support is a tale of community steppung up to open source development, not one of manufacturer provides something. So Windows is certainly not popular with the kind of crowd that gets excited about an editor
Just surprised, as I thought building GUI app on Windows must be easy right, as must be libs/frameworks already available to support that? It's just not.