I'm not saying they're single-handedly propping up real estate, but they benefit from "number goes up" in the economy. If WFH becomes a durable trend and a bunch of commercial properties get written down it's going to have a big impact on a lot of investors. Many large companies either have real estate investments, or their owners are diversified into real estate. It makes sense for companies collectively to push in this direction not out of nostalgia but to avoid a massive correction.