re: “Web inventor Tim Berners-Lee”
Did he work at work at (the early) Cisco? Or Sun Microsystems? Did he work at DARPA?
No, he worked at CERN as an IT engineer/technician. He invented HTML so that he could have manuals available at any terminal at CERN, rather than having to lug a wagon-full of them. It was the first demonstration of a cross-platform solution.
Necessity is the mother of invention. Tim Berners-Lee used his brain to solve the problem.
re: “He invented HTML so ...”
From: https://www.w3.org/People/Raggett/book4/ch02.html
Tim bases his HTML on an existing internationally agreed upon method of text mark-up
The HTML that Tim invented was strongly based on SGML (Standard Generalized Mark-up Language), an internationally agreed upon method for marking up text into structural units such as paragraphs, headings, list items and so on. SGML could be implemented on any machine.