IBM did something similar decades ago. They had a computer system that was leased three ways: [1] n kHz clock [2] n+m kHz clock [3] n kHz clock most of the tim

IBM did something similar decades ago. They had a computer system that was leased three ways: [1] n kHz clock [2] n+m kHz clock [3] n kHz clock most of the time, but you could pay for n+m kHz clock for limited periods of time. [2] cost more than [1]. [3] could cost less than [2] yet still let you deal with peak usage that [1] wouldn't handle.