I also would not conflate WDW and DL into the same bucket either. They are run by the same company, share the same organizational budget, and both have a mouse problem, but are very different beasts.
Just consider the metropolitan area populations for each 2.03 million for Orlando (4 parks, 2 water parks, and Disney Springs and 32 hotels) vs 12.9 million for the LA area( two smaller parks, Downtown Disney, and a few hotels). That's quite a difference in the scale of consumer supply and demand. DL = Locals, WDW=Destination
DVC exists to gobble up those excess hotel rooms and have someone else pay the maintenance on them. Still a timeshare.