> If Apple would make some drivers, even just for Windows, I bet they'd sell more macs.

The incremental bump in sales would be very small.

Even when Apple did provide bootcamp drivers to run Windows on old laptops, very few people used it as their daily driver for a Windows computer. I'm sure Apple has a better estimate of the market for people who bought Macs to use with alternative OSes back when they supported it, but they've calculated that it's not worth the effort.