WeWork is the dominant player as the overwhelming trend in business is towards flexible and remote working.
If even a small percentage of companies adopt the Gitlab model, WeWork is going to be extremely successful. And given Softbank's business model is designed for long term, strategic bets there is no way I would be cutting losses just yet.
Softbanks model isn't proven yet. They overinvest and create unicorns in the expectation that the 10x extra cash will cement market leadership for the startup.
That doesn't mean much if the market does not materialize, which is possible because remote work does not require shared office space. Currently the trend is that connectivity removes the need for an office entirely, not generate more demand for them.
Softbank's model won't be proven for decades. It invests in brands that they believe will dominant their industry and still be around in 50 years time.
And as Gitlab and others have found many people simply don't like working at home and want to be around other people. And also need infrastructure like meeting rooms on the odd occasion. WeWork provides that in almost every city. And 500,000+ people today currently see it as a useful service.
Which is still to my point: Softbanks Vision Fund model is not proven yet. It is just as probable it is more a vehicle to find a place for Middle Eastern money to sit than a true 10x fund strategy, which is becoming more evident since they're already working on Vision Fund 2.
Requiring Gitlab doesn't translate into requiring office space either.