For reference, by the time Uber had raised this kind of money, they already had >$1bn in revenue. How they can keep this thing going on is beyond my comprehensi

For reference, by the time Uber had raised this kind of money, they already had >$1bn in revenue. How they can keep this thing going on is beyond my comprehension. Either the technology is so mind-blowing that we'll all be compelled to use it the moment we see it (in a year? two? a decade? what kind of runway are they building with this money?), or this will be the next Theranos.