> that's what a lot of thosebestablishments are called.

I'll bet this is regional since it's not common in my area (GA) and I'm old and haven't really seen this more than maybe a couple of times in many decades. Did a google search for businesses and zero are called this in a 40+mile radius near me.

edit: and in doing even more 30s research I find this term is likely very specific to Texas

https://www.reddit.com/r/houston/comments/kl2yaw/do_you_use_the_word_washateria_or_laundromat_to/