What maintenance contrast underscores the difference between commercial yeast and a starter?

Answer

One is activated as a dead ingredient; the other requires regular feeding to remain alive

Commercial yeast is treated as a pre-packaged ingredient that is simply activated, whereas a robust starter culture is a living system that demands regular attention, feeding, and maintenance to ensure its viability.

What maintenance contrast underscores the difference between commercial yeast and a starter?
culturefermentationbreadmicrobeyeast