I do contracting for a professional services outfit, and they gave me the Windows corporate laptop (Dell Latitude) and also sent me a MacBook Pro 16", which my manager had to explicitly ask for.
The only difference? I can receive encrypted emails only on the Windows laptop due to some software not being available for the Mac.
I do all my development on macOS, and if spending $4k on a machine means I am more productive, can get work done faster, it's a return on investment that pays back multiple times.
Do note that laptop refreshes in my past companies (current is ~2 years) have been on average every 2.5 year... so it's not like I get a new laptop yearly.
That Dell Latitude is frustrating to use. The trackpad is absolutely atrocious, the display is dim, the keyboard is really mushy and causes pain in my hands when I use it for short periods of time...