I note the fact satellite commuter campuses often have at least a fairly robust set of non-academic services available is a testament to the fact that in most states, such satellite campuses are being significantly subsidized by the state in question.
Of course the state could likely save some money by cutting those non-academic services (and sometimes they do). But particularly these days, a lot of those campuses are actually struggling to maintain application volumes and enrollment as it is.
In the social media surrounding only the most selective colleges in the US, you would think there is a universal explosion of demand for college in recent years. The truth is a few “national” colleges are experiencing an increase in applications (although not as much so in terms of well-qualified applicants), and the very large portions of the US college system that are more “regional” or “local” are experiencing widespread decreases in all but a few states:
Cutbacks to lower costs may help in a few cases, but my understanding many public systems have found that actually created a dangerous negative feedback cycle.
So, yeah, I’m not sure the necessary market conditions exist for satellite campuses and such to do a lot more cutting of services.