He found it frustrating that in those days, there was different information on different computers, but you had to log on to different computers to get at it.
He thought "Isn't there a better way? Can't we just fix this problem for good?"
That became "Can't we convert every information system so that it looks like part of some imaginary information system which everyone can read?"
And that became the WWW.
Did he invent the Internet?
When he was working on the WWW, most of the bits he needed were already done. Others had figured out the Internet Protocol, and also the Transmission Control Protocol as well as the Domain Name System. People had already used TCP/IP and DNS to make email, and other cool
things. So Tim Berners-Lee could email other people who maybe would like to help work on making the WWW.
He didn't invent the hypertext link either. The idea of jumping from one document to another had been thought about by lots of people. Many hypertext systems had been made which just worked on one computer, and didn't link all the way across the world. Tim Berners-Lee just had to take the hypertext idea and connect it to the TCP and DNS ideas and - Hey Presto! -- The World Wide Web. Tim Berners-Lee succeeded because he imagined something could happen.
'Unbounded opportunity... limited only by your imagination.'