What you think is not happening…
It is a great look at how the fluid the alliances can grow and shrink.
If you want your alliance and corp to grow. You have to put in the time and effort. There is no number crunching here. It is about how well you can sell your corp and alliance to make it grow. The Imperium started off as a back water corp. Goonswarm was just a handful of corps that more or less got along. The same for all of the big Corps and Alliances today.