Steam turbines are actually self regulating because of this. The more power being used, the more amps are automatically produced. Once you spin it up it manages its own speed.

This is sort of true, within a narrow operating window and an idealized environment, but also pretty simplified. That sort of application of Ohm’s law only works according to the naive interpretation when you’re talking about ideal DC devices. In reality, inductance and capacitance become significant and muddy the waters a lot when you start getting into real power grids with huge inductive loads like motors and transformers all over them, and steam turbines trip and/or bypass all the time to avoid overload or overspeed.