Do you really think this is true or is this some kind of sarcasm?
Better tools, better practices, better understanding of what works and what doesn't, better resources online.
Even simple things like most people these days understand how HTTP actually works, back then you'd be lucky to find people who even understood basic HTML.
Did you use Google back then? It wasn't actually that great, you might have to do a bunch of searches, try excluding words, just to get some vaguely good results. It was a lot better than the rest though.
Google's results were orders of magnitude better, in my opinion. I don't remember how it compares to today, frankly, but I remember the tears of joy I shed at the time.
It was better, but I can't remember thinking it wasn't orders of magnitude better. I didn't use it once and think 'oh my god, this is perfect'. It was a gradual switch. And to begin with the thing which made me use it more was the simple UI.
Google was _slightly_ better than alltheweb.com at the time that I added it into the mix. But it slowly began to win more and more of the "query requires using 4 search engines" contests and eventually I only used one.
Typically when people espouse the want to "change the world" it is for the betterment of humanity; though it is interesting that you identify with the sentiment.
One phone call I got just after it was installed at a 15-20 person business. I'd helped them out with something and asked how the roll-out was going:
Client: "Yeah, it's great, we're loving it. Bit of a problem though..."
Me: "Oh right, well maybe I can help you out, what is it?"
Client: "We don't know what to do with Sue and Bill now, they don't have any work to do. What can we get them doing?"
This boring, non-game changing software had automated roughly 10% of their workforce. Obviously not great for Sue and Bill, but when you put it in those terms the cost savings across all the clients we were serving must have been 10s of millions of pounds. That's millions of pounds to be spent on actually building things instead of just faffing around with admin stuff making sure the subcontractors got the right diagram, or finding out what the site foreman's phone number was.
Even the silliest auto-tweet tagging software means you can do more with less, that's why people buy them.
Almost all software is game changing. Never doubt we are all changing the world. It's just that the low-hanging fruit has already been picked. What Google did back in the 90s is almost laughably simple to what most of us do today. But obviously what they do now is much more complex.