Market creates a lot of unproductive jobs by itself. Take sales and marketing. Most of it nowadays is zero-sum - you work to undo the work of your competitors. That's why there is so many jobs of this kind - being a zero-sum game, you can throw ever increasing amount of work and resources at such job for zero marginal value, because everyone of your competitors does the same.

That only works in situations with a competitive free market without any barriers to entry. So pretty much never