A lot of these things were proudly unprofitable, which is basically their way of getting around anti-trust violations. If they had a revenue stream to make the business profitable (outside of investors handing them more cash) then they'd be hit with anti-trust lawsuits for offering services at a loss in order to drive the competition out of business. But instead they just convince investors to hang on long enough to achieve the same goal, then raise their prices when they've got too much power to fail.