's attempt to dominate the Internet by integrating this poor excuse of a browser with every Windows OS, although this was deemed illegal, they made some bullshit up about it being a core part of Windows. So in the end, they integrated this POS into Windows.
IE is buggy, has many security holes, is slow, supports ActiveX so websites can install their XXX dialers on our systems, and finally, it's not standards compliant, so 80%+ web pages have sloppy HTML which doesn't work with standards compliant browsers, only IE. How convenient.
Internet Explorer is the most COMMON browser, but NOT the most popular.