2 big numbers — $4 billion and $47 billion — sum up WeWork's business model and the risky reason it

WeWork's initial public offering paperwork, or S-1, offered some numbers that both sum up its business and highlight its risks. The company touted its $4 billion in future lease commitments from its customers. But it also disclosed that it had $47 billion in future lease obligations to its landlords. Neither number is set in stone, but WeWork's customers could have an easier time getting out of their lease commitments than WeWork could have getting out of the obligations it's on the hook for...