So uber would 'buy' from some central org? Why not just cut out the middle man then and deal directly with their employees? Why create a middle man? Middle m

So uber would 'buy' from some central org? Why not just cut out the middle man then and deal directly with their employees? Why create a middle man? Middle man in any economic system tend to destroy wealth. Uber is in itself a middle man between people who want a ride and people who pay for it. They upended a middle man who was less efficient.