> Apple has all but zero presence in BigCorp outside of social media and creative teams

Depends on the BigCorp. One of the most quentessential BigCorps out there, IBM, is deep into Apple stuff. As far as publicly shilling for Macs with extremely questionablly extrapolated data - they did a pilot with power users for a year, and came out saying Macs cost less in hardware and support than equivalent Windows Lenovos over the full lifecycle of the machine; which is literally impossible to know a year in a pilot with power users compared to the 4 year lifecycle for all sorts of people.