[notahacker]

Not when the companies that wish they could shorten their lease terms tend to be stuck with them (and sometimes, after shedding some employees, with a lot of additional space they could let out short term...). WeWork also isn't at the cheap or flexible end of the short term office space rental market - it's very much a product designed to appeal to a particular type of company starting out. They could pivot, but so could other people with office space they can't lease out...