Microsoft was profitable. Uber isn't. Lacking a non-hand-wavy path to profitability and being default-dead[1] are pretty good arguments against a company's viab

Microsoft was profitable. Uber isn't. Lacking a non-hand-wavy path to profitability and being default-dead[1] are pretty good arguments against a company's viability. [1]: http://www.paulgraham.com/aord.html http://www.paulgraham.com/aord.html