If you look at the overall "computing devices with a reasonably high performance CPU" market, Linux has won the server market, and through Android, won the phon

If you look at the overall "computing devices with a reasonably high performance CPU" market, Linux has won the server market, and through Android, won the phone/tablet market. If you squint a bit, you can lump MacOS and iOS in this in that they have a Unix core and use a lot of the same software stack as Linux. 50 years ago, IBM owned the computing market with mainframes. They still dominate the mainframe market, that's just become a smaller and smaller portion of the overall computing market as time has gone on.