> while iOS, Android, and macOS account for the rest. Of these devices, approximately 45 percent are
Pretty much everyone has an android or iOS device in their pocket. A lot of those devices are enrolled into Microsoft MDM in order to access email/teams/etc. These phones are part of the stats. Dev work in general is done on Windows boxes, unless you are in specific teams that have other requirements. Default is Windows, specifically Windows laptop.
200,000+ windows devices issued by the company.
200,000+ phones.
Worst case somewhere around 50,000-150,000 tablets.
That leaves ~200,000 unaccounted for devices with only macOS on the table. I think the saturation is higher than you have experienced, although I'll give that it's entirely possible that the areas you worked in were not one of them.
Have you worked in those areas with high saturation ?