I VERY MUCH doubt that, other than
DVC members, other Disney guests will spend $175,000 on accommodations alone between now and 2054.
It depends upon how you define guest, I suppose.
If you define it per hotel room...then the cash Deluxe guest will spend much more than that. 12 nights per year (which is about what 160 points will get in a studio) , at $400 per night = $4800. Multiply that times 50 year and you are looking at $240,000 just for the room. Now figure in the increasing cost if the room, and it will certainly be in the $275,000 plus range for the 12 nights of use of a CR room over the course of 50 years. It makes no difference financially to Disney (or any other business) whether that $275,000 comes from one person or 50 different people over the course of the years, as long as the room is rented.
In fact, the $175,000 from a DVC membership may not come from one single member, either, as contracts can be sold to other people. Remember, that over the course of the years, DVC dues have, on occasion, though rarely, gone down.
I am also curious how you arrive at the $175,000 figure. Figuring the $16K buy in for 160 points, and even $8 per point dues per year, that is $80K, not $175K. Also figure that over the course of 50 years, the cash visitor in a deluxe room, on a once in a lifetime trip, is more likely to splurge on the more expensive restaurants and try to do everything that Disney has to offer in that 12 day stay, rather than take the more relaxed approach to vacationing that DVC provides, and the "extra" spending for meals and souvenirs is a wash at best, and more likely higher with the cash visitors over the same period, as DVCers can prepare meals in their room.
Now, a Value resort room, at $100 per night, over 50 years, 12 night pers visit, will yield $60K (or only $20K less than DVC). So yes, basically, DVC members are getting a Deluxe studio for about the same price as POP. To make that $175K figure relevant, you must also figure that cash room costs will increase by 5% per year, or that a Value room at POP will cost $1000 per night when your DVC contract ends. Deluxe rooms would cost $4000 per night.
And no one has yet explained how Disney giving an upgrade, or more perks to other guests, detracts from their DVC stays or experience.