I couldn't read the full article since I am not a WSJ subscriber, so forgive the naivete, but what inherently is wrong in Neumann leasing a building that he owns ? I mean, he could have rented that building to someone else, instead he is leasing it out to WeWork.

How did get get the money to buy that building - if he is siphoning money from WeWork revenues and using that, that's illegal I suppose. If he used Wework stock options as collateral to finance the building, that could be some grey area I guess.