[FirmwareBurner]

>Because this would create an environment where an ethical alternative could appear.

That's exactly like saying "if we remove this dictator form this middle eastern warzone, a peaceful and ethical leader will naturally replace him".

No mate, you'll get no ethical alternative, instead Google and friends will immediately take over the power vacuum left by Microsoft before any start-up can even begin hiring.

[diffeomorphism]

Nah, your analogy would be replacing that dictator with multiple federal or city governments. Sure, it will not magically make things better, but having changes/competition get started at smaller scales is much easier. So having multiple "google and friends" is preferable over just one.