I can't imagine that there isn't a market for this. Look at the number of people recommending Ubiquiti stuff to each other. There are entire YouTube channels dedicated to it. If your whole living space or small office can be covered with a single access point, get a 3-in-1 combo that has a WAP, a router, and a small switch. But if you don't, you are left with, what exactly? There is also some demand for mesh stuff, for people who rent and don't want to run Ethernet cable.

My plan: OPNsense on a PC Engines board for router + firewall, an unmanaged PoE-providing switch for switching, and something from 2-8 WAPs for indoor/outdoor Wi-Fi.