It isn't called Sears Tower any more.

In a moment of decline sears sold it. Because it was a liability, not to the company but to the stock price. Sears Tower was going to be bought at the bargain basement price of sears stock.

Hell all of the robber barons of the 80's (the gordon gekos) were doing the same thing. We're still doing it now with private equity. Only now there's nothing to sell so we're stacking debt on the companies.

You could have an anti capitalism rant here. It would not be productive. Stronger regulation, and different corporate structures are needed (See Mondragon). The latter is on everyone, myself included, CoOps aren't new in America. (See everything between the coast's that involves farming intersecting with CoOps.) We just need more of them in urban areas.