I’d assume because in general we have smaller cities. I used to be big into RC stuff (remote control boat and car) and there were hobby shops around. All gone, or converted into old people hobby supplies only (macramé, bead work, hook rugs, etc)

I got all my shit on Hobbyking and aliexpress.

I also get my dental floss, electric toothbrush heads, and underwear on aliexpress. So it works both ways, the local retailers aren’t getting my money.