Probably depends on the nature of the business.
Some types are business are inherently more IT dependent than others.
At least, once upon a time I contracted to/ in an industrial factory making insulation.
The permanent IT staff was 7 for a workforce of around 1200 .. and most of those were dedicated to the production control systems in the plant (ancient honeywell machines).
Most of the workers were union tradesmen .. whom responded to the new email system training materials was to circular file them before I had left (and tried to use the shared computer to access playboy.com (mid 90s).
Contrast that to today, where my job and industry is essentially all IT ((what with people carrying a network enabled computer in their pocket that happens to make phone calls and is still called a phone).