Yes, they've had deals with OEMs like that https://www.cnet.com/news/microsoft-investigated-in-europe/

> Novell complained in 1993 that Microsoft blocked competitors out of the market for operating system software by way of certain anticompetitive practices. It criticized Microsoft's standard agreements for licensing software to PC manufacturers, which required payment of royalties based on the number of computers shipped, regardless of whether the computers contained preinstalled Microsoft software

> After intense negotiations, Microsoft agreed to change some of its license contracts through the year 2000.

It can still cost more, if the OEMs made deals to pre-install crapware (those antivirus trials and such).

I imagine installs in high-piracy nations aren't terribly valuable to crapware peddlers, because they rely on enough people buying something from them to recoup their costs.

Good point!