So much of Robinhood's product is built on the facade of a margin-account-not-being-a-margin-account that that would be impractical. Doing so would have likely

So much of Robinhood's product is built on the facade of a margin-account-not-being-a-margin-account that that would be impractical. Doing so would have likely pissed people of more. "New sign up to Robinhood? Just started a transfer? Awesome! I know all our marketting material says 'trade right away', but actually you have to wait 2 days right now." "Just sell a bunch of other stock in order to buy GME? Well, unfortunately right now you can't use that money for 2 days. See you next week! Ps: thanks for the taxable event that you probably wouldn't have done if you understood that you'd have to wait!"