A touch of : I worked at Easynet in the early days of the UK commercial Internet, and we packaged browser in our welcome pack as it was initially free for non-commercial purposes and we stated we were providing it as an option for browsing the web rather than supported software.
The pricing model changed in February 1995 and the company had a visit from a sales person at Netscape's UK office, who presented them with a bill for the retail price of the number of copies of the browser they had distributed.
A deal was negotiated based on that (it might have been zero, I never found out the details) and the pricing policy changed within a year, quite possibly because they'd had the same response in many ISPs.
Netscape's position as most popular web browser lasted as long as it took for Microsoft to license the same code base (Mosaic, licensed from Spyglass, who had in turn licensed the code from the University of Illinois) and improve on it and include it with Windows. Their other corporate products, Web Server, Identity Server, etc which were pretty good at the end of the 90s, also got passed around various companies and survive as open source versions that are arguably more successful than their commercial antecedents.
That could have been Mark Andreesen's legacy, but it was all born out of a want to get rich, and as he's got older, he's gone the same way as so many of the early tech bros, and like many of them, not actually doing anything useful as a means.
This piece puts it in a much better way.