I live in Toronto, Ontario and we are pretty lucky in this area with regards to hobby shops. Within about 100 miles, there are over 2 dozen hobby shops! About half of those keep a good selection of car kits, paints and accessories of some type.
However, when I head to North Bay (about 230 miles north) for work, they have 0 hobby stores. If they want to buy a kit, it's either WM or mail order. I know there are many others in North America in a similar situation of not having a LHS and losing an online or mail order supplier will hurt them.
IIRC, Tom started out selling vintage and collectible kits many years ago and expanded from there. He will still be selling those kits but on Ebay, unless he has something else up his sleeve. He will re-do the Forum soon and I guess that will be to keep his finger in things and help his new venture.
I have bought from Tom over the years and I was always treated well. The vintage kits were well inspected and catalogued. His newer kits were priced lower, often due to his volume, and he had many specials, like $12 for a Lindberg 1/12th Fiat.
The more things change in this hobby, the more we discuss it.