Whether a particular dealer survives or not could depend on many factors such was whether farming is still a strong area of the economy in the region where the dealer is located. Any particular dealer's financial strength could also depend on how well the dealership has operated over the years. I'd say there are too many unknown variables to assess the strength of tractor sales without knowing more about the particular dealer's situation and that would mean having inside information on the dealer's financial strength, too.
I can think of a dealer started by a guy that was pretty good when he was alive to run it, but I'm not so sure his widow can handle it now that he's gone.