Comment by qbasic_forever

The same engine of HTML + JS has powered entire businesses and industries from $0 to billions and billions of dollars over 25 years. Amazon.com would not exist without web browsers, and its entire trillion dollar+ business is an enormous bet on the web. I would say there's zero danger of the web going away when folks like that (and many, many more... Google, Facebook, etc.) depend on the web for every microsecond of their existence.