You're going to need to provide a citation for this statement.
As for the rest, how many people are getting wealthy from these companies? Largely the same people who were getting wealthy from previous generations, and a few lucky individuals who managed to gain entrance into the elite class. But really, it's the VCs making all the money here. The same sort of "already wealthy" people who have been making most of the money for the past several decades.
On your examples, they are extreme hyperbole. GE dying? Their revenue is 123 billion and have over a _quarter million_ employees. They span everything from aviation to healthcare to things like lightbulbs. Presumably you think Tesla is killing them or something? They are at 7 billion revenue and only 33 thousand employees. In automobiles GE has already simply bought self driving and electric car technology and by the time it's mainstream all their cars will have it. Tesla is amazing, but giants like GE have so much wealth they won't be going anywhere that easily, which is part of the point.
Ditto for the taxi industry. Dying? They seem to be everywhere still meanwhile Uber and Lyft are getting more and more regulated, or outright banned in some countries and cities. No, the end game isn't the death of taxies here, it's simply a change in the industry. Taxi companies will need to become more like uber and lyft, meanwhile uber and lyft will be regulated to the point where they are little different than taxis. Self driving cars might change the game, but by the time they are normal lots can change.
Most of your examples are not example of fundamental change, but rather simply the same rich people changing technology. Cable didn't die, it became netflix, hulu, amazon, disney, etc. Channels become streaming companies. Ads become product placements and internet ads. Same old stuff in new clothes, with the same cast of people running the show.