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Linux has less than half of Linux’s desktop share
(www.theregister.com)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
Wikipedia is using this site as the source, and that site shows around 20% market share for Mac. Linux is at 3% and ChromeOS is at 4%, so if you combine them and double that it still isn't at 75% of the market share Mac has.
This isn't mentioning that dealing with Linux compatibility is more annoying than Mac or Windows compatibility. Macs are very uniform, Windows has a giant making sure everything is compatible, and Linux has 900 distros that will never agree to co-operate.
Flatpak