What does "grow" mean? What if JT doesn't want to become a multimedia empire? What if he's fine with his small crew, doing the few YT channels and podcasts that he's already doing?

Profit is just the leftovers, Revenue - Costs. But its relative to a time period.

You can have negative profit in a week during a month, break even during a different week during the same month and have a profit by the end of the month but still have negative profit once you start adding in the costs of the next month.

So unless you're waiting until the end of a set fiscal period to do your business purchasing, its going to wind up being a cost of doing business.