Actually you can. That's what they do in the rest of the western world. Not saying it's a good idea, but it's far from impossible. It's more of a "do you want to".
> For the year ended December 31, 2016, we incurred a net loss of $514.6 million, as compared to a net loss of $372.9 million for the year ended December 31, 2015.
Some serious progress there. Great. Let's IPO O_o