Non-gaming anecdote: Colleagues wanted to build a Rust application for different platforms. (Save for scripting languages, Rust has some of the nicest tooling around that.)

Building for Windows:
cross build --release --target=x86_64-pc-windows-gnu

Building for Linux:
cross build --release --target=x86_64-unknown-linux-gnu

Building for macOS:
Uh, you need some signing key or something like that? I believe, they had also concluded that you’d need to use a Mac to do the build, rather than being able to cross-compile from wherever.
In the end, they decided not to support macOS…