If you don't mind me asking, was there some specific Apple hardware you wanted to use i.e. if you were only running Win 10 why not just use a Dell or Lenovo box?
Primarily it started out as I took my older iMac and put at my office instead of the other desktop I had.
When I started transitioning to Mini's in 2010-2011 it was because I was wanting a very small form factor with very low power consumption and not be seen. I could hide mini's on the back of most monitors with vesa mac mini mounts.
I had 2-3 Minis. Then they started going on the refurb store and I could get an entry level mini for just over $400. Used RAM from eBay or other mac resellers, and best buy was selling 120GB SSD's for about $60. So for $500 I had a workstation that has lasted some of them 9 years now with zero maintenance so my total cost of ownership is quite low. $500 over 9 year period with zero maintenance cost isn't too bad.
If a machine goes down, I have an employee that is getting paid but not producing, then I have to pay someone else to order a part, go get a part and then the time to repair. All of it costs $$$, multiply that out times 30-40x and that can potentially significantly increase the cost of operating.
But yes I have done the Dell's twice at one location. Almost all required replacing in some form over 5 years.
Another location I did Lenovos and they are still being used now, 8 years later.
So I don't force a Mac into a spot that doesn't make sense, if it works I use that. If something else works, I use that.
So out of 5 locations, 1 of them has primarily Mac Mini hardware because it was a cheap computer that never gave me problems. Another has a mix of mac and DIY PC's, another has all Lenovos, another has a mix of pawn shop computers, just throw away the drive that comes with it and replace with a cheap SSD and go.
It works for us.