At the same time MacBook Pro's did not have significant changes in order times. I suspect this is because that for large corps, Macs are not as prevalent as Windows laptops. More "specialist" less "commodity".
Personally, I have 10 year old Macs still usable. This message comes from a 2012 MacMini - laptop level hardware. Equivalent age Windows laptops are either Linux (which is also not as corporate common) or our of service.