Well let's see if we can make a short list:
1) Can I look up almost anything? Yes 
2) Can I learn a foreign language for free? Yes 
3) Can I fund something interesting? Yes 
4) Can I communicate with my family and friends for free? Yes 
5) Can I learn stuff for free? Yes 
Seriously I didn't even try, yes progress has got us somewhere. Admittedly we do now have n+1 standards
 Honestly there are so many - email, skype, facebook, whatsapp, etc ...
edit - edited
And your 4) we could do that in the 90s as well. Email isn't a 21st century invention and doesn't depend on web technologies. Same with instant messengers. Skype - for video, bandwidth is the thing the 90s lacked to support this system. WhatsApp - widespread mobile devices was necessary for this, 90s lacked that. And none of them, other than Facebook, is wholly dependent on web stuffs, they're internet technologies and platforms.
Indeed all those sites mentioned are just manifestations of an idea that is really independent of any "progress in web standards", and had someone thought of the idea 20 years ago, they could've just as easily (or maybe even more easily - because of the relative lack of complexity back then) set up a site for it.