[vagarwa]

Not having a 'scalable' business model (or having to prove that the model is indeed scalable) hasn't deterred other companies from going public and having an awesome final exist (from Investors' perspective). Example: Successfactors.

Here is the excerpt of their S-1 from IPO and their last 10-K as an independent company: http://mark.ly/KgA6PO/

The point being that as long as Box's bankers can convince the investment managers that there is an eventual buyer, box will have a decently oversubscribed order book at IPO. Of-course roadshow can't and won't mention this.