There's a level of immaturity in the current definitions of profitability that the Valley is pushing. Being privately held ensures that no sensible accounting system will be anywhere near their books.
This focus makes EBIT an especially useful metric for certain applications. For example, if an investor is thinking of buying a firm out, the existing capital structure is less important than the company's earning potential. Similarly, if an investor is comparing companies in a given industry that operate in different tax environments and have different strategies for financing themselves, tax and interest expenses would distract from the core question: how effectively do these companies generate profits from their operations?
Soon, it's going to be "Siri, get me a ride", and Apple's servers will find out what's available at what price.