The preinstalled software on a PC is a substantial source of revenue."
All of the preinstalled software that is present on new Windows machines
is there because two things happen once an OEM starts shipping millions
of PCs. First, the OEM starts paying much lower license fees for
Windows. Second, the OEM becomes in effect a major software distribution
channel. Software producers and providers of network services want, and
will pay for, the opportunity to appear in front of millions of users.
Thus, the ecosystem of preinstalled Windows-based software subsidizes
the cost of a PC; replacing that with Linux would actually increase the
price of the system.