I mean there’s a reason we build buildings, that’s hardly in doubt. The point was simply that even seemingly undeveloped land in or near the urban core can be generating a respectable income stream and then after N years the land has also appreciated. This is especially appealing in the event of a presumably short term glut of residential and or commercial properties/zoning issues.
Also, an acre with parking attendants doubles the number of cars so they could be clearing close to 2 million before expenses, and attendants aren’t that expensive.