I don't get how your point is a counter example to the parent's argument? I think there is a lot of money to be made in building on HTML and HTTP. For one, a faster HTTP protocol directly means more cost efficiency in hosting and streaming content, better customer conversions, etc.
IMO, HTTP and HTML are counter-examples to the statement 'There’s no money to be made in creating and building on open protocols.' because they're open protocols that have attracted a great deal of money, and plenty of people creating and building on them.
