I think the analogy still works in this scenario, though. Like once you've grown so much that your at capacity in your current setup, THEN you can invest in growing your business.

For this restaurant this adding a new room or a new location in another town.

For a solo founder, this might be when you finally start hiring to free up your time for other tasks.

It's not necessarily never grow. It's about growing on your own terms when you can afford to do so.