The state reserves the right to modify, amend or repeal this chapter , or any part hereof, and to cancel, modify, repeal or extend any grant, power, permit or franchise obtained or secured under this chapter , at any future time. [C35, §8512-g57; C39, § 8512.57; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §499.57 ]