We're there dude. I don't know where you live, but from where I'm at, CRTs are gone. Everybody wants hundreds if not thousands for them because the only ones left are those in the hands of retro gamers. All the cheap ones are in the dump at this point.
Note that the footprint of the store is very small, and CRTs are very large, so "no room" doesn't mean they have a lot. Presumably if they were flying off the shelves though, they would make room.
Anyway, scalers and such: We've got a decent-sized end-of-era flat CRT TV sitting on a high shelf in a closet at the shop that I could take home and use but I really don't want to dedicate space in my house to it.
It's possible that there will never be a time when scalers will be able to fully emulate the qualities of NTSC/PAL/SECAM/whatever as displayed on a CRT, but a scaler is a lot smaller and easier to deal with.
I haven't seen a CRT in South Florida thrift stores in years. And when you find something on FB or other marketplaces, people want $200+
I sadly had to part with a 52" projector TV that had s-video inputs. Classics games on that was a thing to behold.
I've been slowly working through games I never got around to playing when I was a kid.
https://www.nintendo.com/us/store/products/sega-genesis-cont...
https://shop.8bitdo.com/products/8bitdo-m30-wireless-gamepad...
Ghouls and Ghosts
Radical Rex
Jurassic Park
These megadrive games had great art and music and are still really enjoyable today