Comment by wavemode

tbh this sounds revisionist... I don't recall anyone saying that any of those services "wouldn't work". Uber I suppose is one where people thought they might run into regulatory problems, and with some of those companies people were concerned about profitability. But none those companies have I ever heard that the product itself was not going to work or be useful. (Nor, indeed, that the product was tested at large scale and performed 3x worse than the incumbent...)