Maybe a little clarification is in order. I have been a dealer in rare coins for well over 40 years and have seen both the highs and the lows in our great hobby. Over the course of my numismatic career,I have seen pretty much everything you could imagine in the hobby,the good and the bad.
There are as many ways to collect as there are personalities.The most successful collectors are the ones who devote time and passion to the hobby and not necessarily the ones who never care to buy a book and have the deepest pockets.
I was honoured to have sold the RC Willey estate years ago ( Bob was the co author of the Haxby Willey catalogue and other numismatic titles). Before Bob died he told me the money was definitely NOT the reason he devoted most of his adult life to the hobby. The return to his family was just the gravy.
Let's face it most everyone who collects coins will not make money on the hobby, but most who are heavily involved in numismatics reap a greater reward the joy of a hobby.
Most dealers myself included are usually somewhat successful and enjoy the hobby from a much different aspect. Believe me being a numismatic dealer is a tough , but enjoyable way to make an easy living.
As a dealer it is tough to also consider collecting as well and most do not, or collect something fun.
Myself I have a low ball silver dollar collection, a collection of pre decimal Aussie copper, and years ago bought a British Wreath Crown collection.