The bulk of the DVC owners do not expect perks. They bought into a real estate agreement knowing all that is guaranteed them is accommodations for the length of the contract and an 11 month out booking window to help them reserve their home resort. It is a long term commitment from both DVC to maintain the properties for the owners, and from the owners to keep paying the maintenance. You will hear some scream loudly when things like free valet are taken away, but the understanding is there that those are just perks, perks change, and no one in their right mind bought into DVC due to the perks.
AP holders on the other hand are mostly fly-by-night types. They buy their passes when it is most convenient for them financially, often skipping over years to get the most for their money. There is no commitment to Disney once purchased, however Disney must provide access to the parks for one year per the agreement. Then the perks added in on top are expected, and arguments are made that the pass was purchase due to those perks.
Would it be nice to see an AP lounge on property? Of course, but the moment Disney tries to close down that lounge there will be screaming like you've never heard before.