Pssst - no one changes ballasts in fluorescent lights any more. That’s as anachronistic as saying you’re going to tape something.
You’d replace that ballasted fixture with LEDs.
Pssst, you missed the point. Here, I'll rephrase that:
I don't know of one auto company CEO who knows how to fix the hydraulics in a 20 ton body stamping press, that's up to the millwrights who work for them.