Is this generally different from the world of business and entrepreneurship where companies aspire to have market share, profits, etc..? IE, specific to the ‘Do It for Me’ market?
Besides these "do it for me" markets, roughly the same pattern is seen with app-stores, and probably many more markets.
(Of course, in a truly free market it should in theory be possible to create such nested markets, but this just shows that the concept of a totally free market is nonsense, and that we should act against these patterns.)
https://www.uber.com/jobs/list
(of course the sector of businesses we are talking about isn't very well defined)