Subsidy
Is the aggravation & hours lost in removing crapware or replacing unwanted OS's worth the subsidy paid to the OEM's, so they can compete on price,(reason for Linux loaded Pc's not being any cheaper than windows (ignoring MS coersion & high unit costs for lower demand?))
Saddly most people look at price, not the true cost, often not knowing, caring & just accepting this status quo.
This also goes for free downloads, just looking at the number of toolbars & junk on my wifes & kids laptops that I continally remove (they blame the machine because its old, so crapware an instrument of planned obsolescence?)
Education is the answer.
There is no such thing as a free lunch & if it looks too good to be true, beware.