Re: You seem to have missed...
"...this is where customers will vote with their feet. "
Only if they know that they have an alternative.
Sadly most people are unaware that Gnu/Linux even exists and the markup on Apple stuff is a disincentive to those on a restricted budget.
I would love MS to shoot themselves and the others in the foot with this idea but can't see it happening. Inertia, ignorance and fear of the unknown may be too strong to lead to a revolution in consumer IT.
And that's a pity.