It is important to note that IE6 didn't suck at first relative to its competition. It just didn't improve while the rest of the web did at the speed of light. I know it's hard to remember that when you're trying to find workarounds for lack of png transparency or figure out why your divs aren't where they should be.
Firefox clearly started happening before they found such a great way to monetize, but I have a hard time believing it would be what it is today with tens of millions of dollars less coming in. Now there's so much money in it that there are multiple decent competitors to IE.
All of Microsoft's settlements seem to have had no impact on their browser strategy really. Every copy of Windows still has IE on it, just like it did before, and requires a download of Firefox or any other competitor. I don't think their "anti-competitive practices" or the cessation thereof have made any difference at all. Hence my original post.