It’s called all the corporate leases on buildings in major cities. Wall Street bought up all the bonds surrounding those debts and with nobody needing to continue work in cities, those corporate real estate prices are about to crash really badly if they can’t bring people back to cities. That means their balance sheets go out of wack and certain positions become untenable to maintain, not to mention they stand to loose a shit load of money. Hence everything saying its bad now, they need people to move back or their investments fall. It’s not about productivity, emotional benefits, collaboration, but about wealth for the elites.