If they wanted to turn the equity value of their buildings into liquidity they could have brought in their teams of slave labor to remodel the buildings into full blown 1, 2, and three bedroom apartments they could have become one of the largest landloards in Brooklyn Heights. That's what I would have done if I was running things.
They could have sold some of the factory property to fund the new shang-ri-la they're buiding on the lake and they could claim most of the money they recieve without substanstial taxes. They could have a small work force of their slave labor managing the property.