They may be playing this on two sides: the more obvious one which is acquiring customers to feed their trading business, and simply trying to evolve into a fina

They may be playing this on two sides: the more obvious one which is acquiring customers to feed their trading business, and simply trying to evolve into a financial institution, which should bolster their valuation in their inevitable IPO in 2019 or 2020. Their backers might be content to burn money for a year or so to get a larger multiplier at some point in the future.