A friend of mine asked me whether something odd was going on, including the following picture:
Basically, the companies listed (Bitcoin, Uber, Facebook, Alibaba and Airbnb) sell a service in a market where usually inventory is required. Whether it's cash, vehicles, content, inventory or real estate, usually those companies have something and sell/rent it. The companies listed are (among) the biggest in their sector and only act as a third party.
What is the term for such constructs?
Best I could think of was a "third party economy", a modern version of service suppliers. It's taking being an intermediary to the next level. But I'm sure there's an actual term for both the economy going this way and the companies carrying it. I suspect even those words being highly related, thus asking this in one question.
Feel free to point out I'm completely on the wrong track if that's the case.