Koolau
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Sort of like gas stations, pharmacies, etc... Still plenty of small ones today but the big boys are taking/controlling more and more.
Doctors have gone the same way as banks. I had a doc I really liked. When I went into his office, he had 3 people w*rking plus a nurse or two. Eventually, he had to join a large clinic where the redundant operations of all the docs could be handled by a much smaller per-doctor staff. He really hated the set up, but only by consolidating the "other-than-doctor" stuff could he make a living. In essence, he was w*rking for the clinic instead of owning his own small business.
Eventually, he got fed up with the clinic system. He and a few other docs opened their own business together. The economics of scale made that business model profitable - and, once again, he was (sort of) w*rking for himself.