While I agree with you, with Twitter the opposite seems to hold true. Many people like Twitter and see it as an integrated part of how they work and interact and that has driven the evaluation of the company. Not once has I heard anyone in the tech press or end in the financial news question Twitter.

Twitter should never have been a publicly listed company. They don't have a business plan, there was never any prof that they would be profitable. But Silicon Vally types, news media and bankers liked using the platform so: hey presto Twitter is a billion dollar company.

Twitter could be profitable if each user paid just $10 per year, but sadly I don't think people like it enough to pay up.