Do we know that? I'm just over here eating popcorn.
While I do agree with what you believe is the "overwhelming consensus", there are legitimate reasons to think WeWork is bullish too. Here's an article I think does a good job representing both beliefs: https://fortune.com/2019/09/01/wework-ipo-stock-should-i-buy...
1) That the consensus is wrong and this is an amazing, misunderstood business. Stratechery has the most balanced view IMO of this possibility - https://stratechery.com/company/wework/ - in this case you will likely be able to value buy the stock and hold for long term gain.
2) That the bankers selling to retail & institutional investors have a giant, incumbent incentive tied to IPO fees, debt origination fees, and of course actual debt repayment. As a result they are going to sell the WeWork stock and because what's good for the goose is good for the gander. If this is the accurate case WeWork will likely achieve their IPO guidance and be a good long term short.
Most people will stay away. But not everyone. And that not everyone may well be enough.
Also, shorting this stock is going to be expensive.
Yet, we know that on IPO day both retail and institutional investors are going to ignore all these red flags and still buy, and the company is still going to be valued at $40-$50 billion. Why is that? Why doesn't everyone just stay away?