Usually, it is more about the breadth of skills required. The different platforms are significantly different from each other and so each requires a certain level of specialist knowledge and skills.
So there is a significant corporate cost of trying to support multiple platforms.
Then there is the user training cost. Windows represents over 80% of the worldwide desktop/laptop market and so skills for both support and users is much easier to come by.
There are some offsets of course for things like Apple devices which tend to have arguably simpler user interfaces for the majority of users at least.
For the most part, sadly Linux desktop doesn't get any of these benefits since skill availability is limited as is investment in tooling and applications. I'm not talking about Linux servers of course, that is very different.
So from a corporate perspective, Windows makes a lot of sense, Mac somewhat less so but it certainly has its place (more often in those organisations with limited support - similarly with the use of Google cloud for the same reasons).
For my organisation of around 12-15,000 seats, only the move to new device management services has let us open up to greater use of Mac's along side Windows while allowing us to limit costs for example.
I very much doubt I would ever have gotten involved if it hadn't
From a personal perspective, I'll always be looking for tools and applications that work across platforms.
Such a sad, sad situation (to quote a friend of mine). I remember when my spirits were lifted greatly by a company (who shall remain nameless) that invented an OS/(insert magic number here) that had the potential to take on Windows. Whatever happened to that company?
Sadly, they are so arrogant over their own success that they don't see their own limitations (and yes, I deal with some senior UK Apple people). They remind me of Microsoft in the worst of the Balmer days but if anything, even worse. When trying to convince us to adopt more Mac laptops, they argued with us over a number of issues - refusing to see the problems it causes us and refusing to accept the UK/EU health and safety rules saying that they new better! Mad.
And of course, they've grown from nothing and got to this stage before then almost went broke. Now they are back to a similar level. They are more powerful than ever and have nearly 30% of the mobile market. If they got over themselves a little, they could easily storm the market. Similarly, if Microsoft don't up their game on Windows 11, they could easily lose a large market share as they did in the server market.
