No, the government didn't show otherwise (in my opinion). They showed you could remove the component, but it degraded essential functionality because IE and the components (HTTP, HTML and form display) depended on the (the OS did, for updates and other applications). I mean the IE the software component, not the browser, because MSFT comingled them at the OS level. At the time, they planned on replacing much of the user interface with web controls, and even today you can see many vestiges of Internet Explorer-like behavior even though IE is gone.
i woudl have agreed with you in the past but when I was curous and went back through all the cases I was surprised to see that I think (from a technical perspective) MSFT was completely right to do what they want, and the main issue was that they simply didn't understand how to win a case in court.