From the guy who didn't see the internet coming ...
By the late 1990s, Microsoft's competition (including Netscape and Apple) were nearly dead. In fact, the browser that Apple originally shipped with OS X was M$ Internet Explorer.
Gates was several months late to the web, but it's not like he missed the boat.
Windows MSIE eventually surpassed the usability, functionality and popularity of Netscape, but Microsoft's Mac version of MSIE did not.
In the late 1990s, many websites did not render or function correctly on Macintosh.
I hope I turned that into jargon you can understand, because I sure couldn't make sense of it.