I've been meaning to comment on this thread for days --
You're forgetting about the priest shortage. The original "shortage" before CV-19.
Except for maybe the SSPX, most trad groups (if you can even call them that; some "groups" have 1-3 priests) do NOT operate as a corporation, where they build X new stores, try to outcompete their rival chain, etc.
It's not just a question of territories, allocating resources, and other business strategy. When you don't have enough priests, you can't "expand" anywhere even if 10 widows left you $150,000 each.
If we were protestants, we could "hire" some preacher to give us his two-cents-worth on the Scriptures, and people would donate money, which could be used to build more churches, etc.
But in the Catholic world, you can't have Mass or even a pared down (priestless) service without an ordained Priest. Only the Novus Ordo -- which is virtually protestant -- is headed in the direction of priestless services, due to necessity.