No, not all of them.
- Model S 40: No Supercharging at all. (Not that there are that many of them left.)
- Model S 60: Supercharging was an optional purchase.
- Model S 85: Originally came with FUSC, but since then Tesla has removed FUSC from some when they took them as trade-ins and re-sold or auctioned them.
But that isn't a guarantee that it will have FUSC. You would have to have them show you in their account that it shows the FUSC is transferable to the next owner.