It's kind of a joke. Their behaviour is predatory and in a decent society that would not be allowed.

I think profit from real estate should be illegal. At the very least from the land you bought. Not sure about what was constructed. But probably not either.

No one should be allowed to sell a land for more than they paid, considering inflation, etc. No one should be allowed to get land to profit. You may b profit from the use of the land maybe, but NEVER from the land itself, be it renting, selling, whatever. Land is not a product you make. It's limited and existed before you.