If their churn is very low, the adjusted CSOI numbers are interesting to look at (once acquired, customers stick around for awhile and have a positive lifetime value). If their churn is very high, welcome back to the 2001 bubble. The fundamental question about a business at this scale isn't so much whether they are making or losing money, but whether anyone actually wants what they're selling (at a price higher than what it costs to deliver). It really isn't rocket surgery.
Or their business model is to sell irrational exuberance and cash out before anyone notices. That's also a viable business model.