In late 1995, Netscape released a browser that provided investors a comprehensive proof-of-concept online platform that was billed as the operating system for the Internet and they were being offered an opportunity to get in on the ground floor.
JavaScript and CSS didn’t matter. Investors were looking at SSL for eCommerce, Java applets, plugins, VRML, RealAudio, etc.
Netscape stood out because nobody else was selling a comprehensive online platform with a compelling and plausible vision.
The World Wide Web became something because a crap load of money was invested into developing browsers.
It wouldn’t have happened on its own to this degree and none of those browsers were on their way to becoming a household name.