Why would "growing" be a prerequisite to success? Isn't profitable enough, especially if already decently profitable?
I assume you are asking a serious question, but yes, you need to at least grow to match the rate of inflation/cost of living. Aside from that, it's up to you to decide how much you want to grow.
Really depends upon the goal. If you're a venture funded startup then the find is aiming for a 10x truth from you over 7-10 years. This will translate to 2-3x Y/Y growth for the first years of the startup. Ofcourse, if you're self funded, these rules don't apply.
Growing yes, and profitable yes! I may not have a million or billion dollar market, but I've totally replaced my desk job income with this :)
I don't see the niche drying up anytime soon, so I appreciate this advice. I feel like I am on the right track!