> I can think of nothing an app-based brokerage could do that would anger customers more.
Disagree, I think this would have angered customers less than what actually happened..
You can't trade with unsettled funds, it's an SEC violation
Only in cash accounts. Margin accounts (which I think all robinhood accounts are?) don't have that limitation.
Instant deposits are definitely not settled funds from your account -> Robinhood perspective.
I can think of nothing an app-based brokerage could do that would anger customers more. The entire point of the app is to facilitate quick and easy trading. The job of the app providers is to abstract away all of the backroom accounting. Requiring customers to wait for settlement would cause a riot.