The demand for up-to-date everything including BSA Spa and Resort facilities have priced many out of the market. It's a lot easier and cheaper to run a commissary than a mess hall, permanent shelters vs. rain flies, tents with floors, flush toilets, running water at each site, WIFI, and the list goes on......
While I agree with you, some of these things are mandated by the various states and feds. And yes, some are mandated by BSA.
Having a camp means having a guaranteed place for events like camporee, training, day camps, etc. There is a local facility that's a lot closer than the camp in my district, 5 minutes away compared to 25 minutes. The 5 minute camp is more primitive and has less faciltiies, so it's great for a lot of things. BUT we are subject to the owners. Currently they shut it down while the main facility, not the camp, undergoes renovations and construction. The camp is being used for storage.