Earlier quoted context omitted.
And it only works as long as all of the drivers in an area agree: one or two drivers who don't join the scheme, and it doesn't work.
Not all. The large majority, but not all. There are very likely one or two drivers in the area that don't participate, simply because they aren't in the parking lot at the moment they orchestrate the mass logout. Surge pricing is about supply and demand, so if expected demand is high (like at an airport) they need a lot more than one or two drivers.
Someone has to check it to make sure it is working.