For example, Google and other search engines would not work without the principle of least power [1], which a lot of people, including Alan Kay [2], somehow don't understand. That is, if the web language was a VM rather than HTML, there would be no Google.
It would also not have been possible for the web to make the jump from desktops to cell phones as the #1 client now. You know the handler in iOS and Android that makes
[1] http://www.amazon.com/Weaving-Web-Original-Ultimate-Destiny/...
- Weaving the Web by Tim Berners-Lee: https://www.amazon.com/Weaving-Web-Original-Ultimate-Destiny...
- Founders at Work: https://www.amazon.com/Founders-Work-Stories-Startups-Early/...