First, here in north central PA, Dick's is definitely not a store to go into for firearm shopping (nor is Field and Stream). Their targeted shoppers are more millenials (and those that fancy themselves in a similar fashion), for golf, soccer, various sports clothes, camping and fishing. Having visited both stores, their inventory of "black" arms is not extensive. During my visits, foot traffic was not extensive, so this 'inventory reduction" may be a sought for excuse, in other words, Dick's waited for the next gun event to extract themselves from a market segment.
Dick's has a decent online business, and I have purchased items from them, that are competitively priced (retail stores are not).
I'm not an accountant, but I do own a manufacturing business, and I am familiar with inventory write-downs. Generally descriptions are limited to verbage such as "obsolete" or "stale". With Dick's, is the inventory "floor planned", in other words having the value under written by a lender or the manufacturer? Or is the inventory owned by Dick's? We don't know, but I would suspect the value is a very tiny percentage of the entire part of what Dick's holds. Further, do we know Dick's is actually destroying the inventory (as they claim), or will they hide it away in an obscure warehouse for "X" years, until some future time, when it actually is obsolete?
I'm not defending Dick's, but believe this was more a business decision than a societal decision (in a way). I believe this is more a means to focus on what is being defined as a core business direction, giving way to acceptable "write-downs" of inventory, to attain the goal.