Earlier quoted context omitted.
> my app is using a cross-platform C++ framework ... Windows and surprisingly Linux pay for development of new features Which app is that?
Spatial Audio Designer + it's virtual sound card. As heard in Red Tails by Lucasfilm, for example. Or the Expendables 3 bluray. LAWO hardware mixing desks are Linux based, so the broadcast world demands Linux tools. But the whole thing started out as an Apple exclusive app to be used together with Pro Tools. Ironically, Pro Tools has also had lots of problems with new macOS releases, so when their Windows presence gr…
If users have other options, that might explain the difference in your revenue across platforms.