Have Pen, Will Travel

I think Yanessa understands better than any of the other Sundered Houses that the greatest threat to their rule comes from ordinary people because, in the end, they depend on those people. She was old enough to remember the Shapers, the gods, and saw their demise. "I suppose to the Shapers, we were all commoners," she added in a pointed comment to Primus.

One he doesn't even pick up on. He scoffs ordinary people as "dretch" and is trying to build a world in which he will never have to concern himself with them. Regardless of what the Tachonis' ultimate design is, it's the classic project of an oligarch drunk on his own power: just create a world in which you never have to interact or even worry about the poors ever again. He's Bezos on his island fortress, he's Elon trying to get to Mars. It's stupid, short-sighted, and relies on the brute force of his magic to plug all the holes in his leaky submersible of a plan.

Yanessa, meanwhile, took the lessons of the Shaper's fall and created the Candescent Creed, a new faith, to fill the religious void left by the toppling of the gods. It's quite clever really, because it's a system of control that uses the illusion of consent for people to happily embrace the rule of a new god.

Through the Creed, House Halovar is able to expand its wealth and influence further than any other Sundered House. Through the Luxes, they're even able to create an entirely new pool of spellcasters to bolster their power that don't need to have been born to a sorcerous bloodline. No other House can boast that except perhaps House Cormoray and its taking over the education of wizards through the Penteveral. Which is only one institution in one city.

Wizards are still rare, but Luxes seem to be everywhere.