In the bad old days you'd have to restart your web browser because it crashed.
Now you have to restart your web browser because it has consumed all system resources, spun up the fans to maximum, and slowed performance to a crawl.
And those weekly severe security vulnerabilities don't crash your browser anymore - they just enable it to be taken over by criminals.
While MS did do some crazy stuff to kill Netscape, IE was just a better browser.
IE 3.0 for the Mac was native code and the most standards compliant browser in existence for awhile.