Can’t mess with the numbers. Any thoughts as to why we see this trend? I say it’s because Apple devices are so damn expensive.
There are reports available that present results from actual scientific surveys that could probably lay out solid answers to that very specifically. I haven't got to read such reports, so I don't know.
If I were to guess, I'd agree with your guess that pricing makes a huge difference here. Lots of people choose based on price... not so much that Apple is "d*mn expensive" but more so at the other end "what's the cheapest smart phone I can get?" and then maybe "what's the next cheapest?", etc until they find a balance of lower price and "good enough" features to buy that phone.
Android is also the underpinnings of some "dumb?" phones and likely still gets counted too. So some of that is likely to be the phones you can buy that actually only cost $75 or $150 UNsubsidized, that run on the Android OS. But even there again- price is likely the dominant driver of that purchase decision.
Again, just look at the past. It took Windows a long time to get as functionally good as the Macintosh OS (though some will passionately still argue against even the suggestion of such equivalency still today). But Apple wanted
dominanting control and
maximum profits per unit sold. Microsoft decided to go for
volume over maximizing profits on each unit sold. For a while both co-existed with both getting what they wanted: Apple making a lot of profit for each Mac they sold, Windows-driven PCs selling at 3 for every Mac sold, then 5 PCs, then 7, then 9.
Price probably more than anything else made more and more people & business opt for the "inferior" Windows OS vs. the "superior" Mac OS. Eventually, Windows mostly "caught up" to the Mac OS enough to make it hard to justify paying up for a Mac over getting a Windows PC. Besides, software generally came out on PCs first- often exclusively- because software developers opted to go for the lion's share of the market instead of writing for the tiny slice that was a very profitable segment of the market (for Apple).
Eventually, Windows "settled in" at about 93% and Mac at about 7%, give or take a few percentage points at any given time. It's pretty much been that way ever since. Windows pretty much rules the computing world (though I certainly prefer macOS myself, having to leverage bootcamp to be able to switch into Windows when a client has software that only runs on Windows that I need to run and/or when I need to collaborate with clients who need 100% compatibility with the Windows versions of the software they use).