Well it would seem that YES.. most do upgrade.. because they can.
Me.. I can't.. I consider myself lucky that I can still get out a couple of times a month and enjoy and evening with my toys.
I too follow the spenders .. wait for the sell off.. keep a tab on ebay..
I will be a B or C main guy I am sure for the rest of the time I do this... but I am having fun now.. when I was young, single, and had the money to waist on this.. I was having a lot less fun, constantly trying to get up to those I could never outspend.
Thing I find funny is.. NASCAR is the most popular form of racing in America because it is regulated and driving more than car gets you the win (along with setup and team)... yet in this hobby.. Spend it.. if ya got it.
lol... I do wish I had droop screws though