The thing that really strikes me about this list is how nearly everything on it is offered at a premium price. One thing I loved about the tech world while I was growing up was that it was consistently doing more with less. Wikipedia displaced Encyclopaedia Brittanica by being both better and free. Hotmail was a clear win over AOL and Yahoo's offerings and then Gmail was faster and handled spam better while giving mo…
To your point, Airbnb bucks the trend you identified by making travel more affordable and accessible. It's also far and away the most successful company listed.
More affordable, no. In my recent travels to NYC and SF, I was always able to get a hotel room via HotelTonight or Hotwire cheaper than an AirBnB unit. I know its not always an apples-to-apples comparison but even for just a private room (not an entire home), an AirBnB in SF is $100+/night.[1]
All that to say, I think you're wrong.
[0] https://medium.com/stay-woke/i-read-about-this-phenomenon-of...
[1] I randomly checked Dec 18-20 in SF. Hotwire has a 4-star room for $91/night. Most AirBnB private rooms are the same or higher.