Both can be true, depending on the regime of operation.
A credible relationship (such as an individual bringing value) can be (and has been) exploited by individuals who want more money for themselves.
Another credible relationship (that the network is the value) can be exploited by individuals who control the choke points.
Your examples are where individuals control the choke points, introducing artificial controls and preventing the healthy accrual of benefits to the whole structure.
A credible relationship (such as an individual bringing value) can be (and has been) exploited by individuals who want more money for themselves.
Another credible relationship (that the network is the value) can be exploited by individuals who control the choke points.
Your examples are where individuals control the choke points, introducing artificial controls and preventing the healthy accrual of benefits to the whole structure.