Given that the Shionel Confederation was a through-and-through corporatocracy governed by the Shionel Merchant Guild, they were naturally involved in all kinds of commercial trades and industries, and real estate was certainly part of it.
Now, they had just been given the chance to acquire a large amount of uninhabited area if and when they cleared the Shionel Dungeon, given that the Shionel Dungeon fell inside their territory.
Perhaps other nations would have treated it as a base of sorts, and armed into a national inventory for storage of military resources, among other things. Perhaps some would treat it as a shelter in times of disaster.
But not the Shionel Merchant Guild. It would undoubtedly choose to make the bold and highly capitalistic decision of turning the Shionel Dungeon into a real estate commodity even after the dungeon had been explored and plundered.
"But how do you know what their plan with the Shionel Dungeon is definitely going to be turning into real estate?"