[thomasd]

There are actually many opinions to this.

Another supplementary reading to this has been covered by Mark Suster: http://www.bothsidesofthetable.com/2011/12/27/should-startup...

In that article, Mark Suster cover a counter example where instead of pushing to become profitable when revenue is almost overtaking cost, companies that are in a fast growing market should consider forsaking profit today for higher growth tomorrow.

Obviously, that depends entirely on the investment climate.