[ThrowawayB7]

The difference is that Microsoft didn't receive any direct revenue off of IE and Google had a lot of levers to use (they weren't under antitrust scrutiny at the time) to continue to eat away at IE's market share. It was smart for MS to give up on maintaining their own browser and downright brilliant for them to use their competitor's own browser against them.

On the other hand, Windows Home and Windows Pro are only part of the bigger picture. Microsoft gets billions in revenue from Windows Enterprise seats and billions more from Windows Server, probably more enterprise revenue than Red Hat and Canonical combined does for their Linux offerings. They have zero reason to give up on Windows while the money keeps rolling in.