If we call the startup "phase" (or bootstrapping) something along the
lines of initialization, then to follow the aerospace metaphor the next
phase would be "lift-off." That would be where the business has moved
from alive but critical, to regularly surviving.
Survival isn`t the same as living a life, though. It`s just getting by.
The stable phase is the same thing, where there`s just enough revenue
to keep the company going, add a little bit to the pocket-money, and
prepare for the "expansion" phase, which would be like the "attaining
Plan, Attack, Control, Consolidate, Expand: those would be another way
to look at phases. The bootstrapping is in the "attack" phase, where
you`re trying to gain a foothold in the marketplace---to control a
"branded position." After that, you consolidate your position (building
a strong defense against competition). Finally, you reach out for more
Expansion can mean two different pathways, though. One is to gain
increasing market share, where the other is to diversify into other
lines of business.
One thing to note, as an addendum, is that there should also be an exit
strategy. In other words, unless you`re intending a totalitarian
dictatorship, the better solution is to take over a territory, then
place it under management. Because this isn`t the same as a military
campaign, the analogous concept would be to sell the business and
either retire to enjoy life, or start some other business.