Exactly. Changing the society would not be that big a deal: if there's profit to be had in conservatism, fine, but if radicalism increases sales, it can be the new fashion. As long as it lasts.
The Ferengi society may in fact undergo major social changes fairly often, about as often as "X becomes the new black" here on Earth... They just don't amount to actually changing the way Ferenginar is ruled and run.