Because the 1st wave of people on the internet were nerds and geeks. People driven by hope and optimist to make the world a better place and using the internet to do things they were already inclined to do... learn and share. You had to read, and write and things were generally long form interactions. Chat rooms required that you write sentences and paragraphs. It was also largely hosted by universities and other non-profit interests. The philosophy of Open Source and Freesoftware was rampant in the 2000s, and then declined as the big 5 took over the internet.
Now the internet is driven by corporate greed and the exploitation of the LCD's lazy monkey-brain interactions. EVerything now is a blurb, a meme, a click, a reaction emoji. A 8 min youtube video is 'too hard' now for the average internet user.