Earlier quoted context omitted.
> that would perhaps open more eyes and hurt Google more than a fine of so many zeroes. Because that definitely worked with Microsoft, right? I don't think most Americans could tell you what Netscape is, let alone why Microsoft was sued or why it should have been humiliating.
As per the article, the significance is that Microsoft did not use its platform dominance to crush an upstart google
Microsoft felt that it had won the browser wars so thoroughly that they dismantled most of their IE team and took their eyes off the ball. Nobody else could make a competitive browser, and therefore nobody could add browser features that would undermine the importance of Windows for applications. They didn't realize that they already had added the key feature for the Outlook team.
The first real use of XMLHttpRequest was Gmail in 2004. Most people just thought of it as a cute trick. It wasn't until Google Maps and the coining of the term AJAX that people thought differently. Microsoft, of course, had already been hit with the 2004 EU decree, and kept its eyes off the ball. By the time Microsoft paid attention, everyone was using it, Firefox was competitive with IE, Safari wasn't too far behind, and Google was already working on Chrome. But by then it was too late. Microsoft didn't have the IE team, and had been shocked at the EU penalties.
Therefore I give the credit for Microsoft not crushing Google to the EU antitrust, and not the USA antitrust. Which really did have no teeth. As can be seen by their efforts to anticompetitively promote Windows Media Player.