[davidu]

Your examples are not just wrong, but the opposite is true. Twitter and FB needed crazy cash early on, and twitter still might. FB has a business model now, but they didn't for a long time. But they went from low millions to nearly a billion "over night" long after they had spent hundreds of millions of dollars.

Twitter is just now building a revenue business but has raised nearly a billion dollars.

Google is a decent exception to that rule, but only because they turned their revenue engine on just in time and it was an oil well of cash. Otherwise they would have had major cash issues as they scaled their infrastructure.