Earlier quoted context omitted.
> It puzzles me how people still think Robinhood can remain competitive knowing they sell user's order flow to hedge funds Many brokers do this. They get better execution services from hedge funds / electronic traders than they could possibly build themselves. Given rules like NBBO for equities, this can really matter. It saves them money in engineering a hard problem AND makes them money from the other side.
You cut off the end of the proposition: "...and restricted free market movement of capital in the markets." It is relatively common for brokers to sell order flow. It is not unheard of for brokers to stop trading in a security for limited periods. It is very strange for brokers to enforce one-way trading in a security as Robbinhood did, and highly suspicious on top of that when the resulting asymmetric trading regime…
* https://mobile.reuters.com/article/amp/idUKKCN2253T2 * https://mobile.reuters.com/article/amp/idUSKBN1FT2S4
Robinhood was in a no-win situation. You can read about why they were forced to restrict buying here: https://www.cnbc.com/2021/02/01/elon-musk-on-clubhouse-robin...
If they restricted sells too, they would have been lambasted, likely even more than they currently are, by people trying to get out of their positions either to capture gains or avoid loss.
Robinhood's only move was to mitigate the fall-out with customers through messaging, which they failed miserably at. It's unclear to me whether this failure was due to incompetence or because they were (or thought they were) restricted from providing certain information by law or contract.