Wasn't this the very earliest billing model in multiuser computing? Give us a program to run on our big iron, we charge you for the CPU time it consumes? This

Wasn't this the very earliest billing model in multiuser computing? Give us a program to run on our big iron, we charge you for the CPU time it consumes? This is how university supercomputers work currently. You don't get dedicated hosts; your project has a budget of CPU hours.