People are free to do whether they please to do as long as one can bear the consequences. This is a free country.
If they want to sit on it and wait for the price that please them, I don’t care; it’s not my money. If I were them, I would lower the price(be less greedy, more price conscious), sell the damn condo, invest the money in something that will have a better chance appreciating in the next decade.
That’s just me. But well, whatever floats your boat, you know.