They could. Plenty of retail brokers offer some kind of checking. It would be far easier if they did that, but that comes with regulatory risk so it probably isn't worth their time right now. One idea would be direct charges to a debit/credit card similar to the way pay-to-play apps work but that comes with it's own set of risks I'm sure the SEC and FINRA have specific regulations about.
So it's doable. RH could be a investment vector for millennials. Exactly what is needed for euphoria to form.
