I guess they are offered lower fees for paying the services...
Can they really make a living from lowering fees? From what will they then get paid?
They can if they have a couple of bigger clients under their wing.
Well, fees will still exist, only by reducing them they will obviously attract more companies and users.
Yes they will become more competitive but how will the smaller fees impact the maintenance cost for the project.
Well, less fees will certainly affect the maintenance costs of the system, but I believe that this difference will be compensated in some other way, maybe they will get some funds when entering into a deal with a particular company ...