And yet the majority of all computers dont just have some open source software, their operating systems are open source. The worlds digital infrastructure is largely open source.

Not to mention the majority of business software depends on open source software too! Be it the thousands of libraries we use (so we don't have to implement ourselves and we get better integration with others) to literally building on top of open source stuff (Android, every slicer for your 3d printer, all your servers, and literally millions of other things)