Earlier quoted context omitted.
> I'm saying they shouldn't have done it They had no choice. They literally couldn't obtain any more GME stock. You cannot squeeze blood out of a stone. What do you want Robinhood to do? The GME situation got into a "sold out" situation. Much like how a toy-store runs out of Furbies back in the 90s, Robinhood ran out of GME-stock to sell to its customers. They would allow "selling", because Robinhood can then obtain…
You're saying they'd sell it to the next customer, but Robhinhood wouldn't sell it to the next customer - so that's where this seems to break down. When a RH user placed a sell order why couldn't the buy side of their order book add that?
So when a RH user hit the buy button, RH couldn't find a seller within Robinhood and had to go to the clearinghouse to find other sellers. Robinhood maximized its buy orders to the clearinghouse (ran out of money), and that was it. RH couldn't afford finding sell-orders anymore. Game over.
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Furthermore, the amount of money needed at the clearinghouse was clearly a burden to Robinhood. When they saw the bill, I'm sure they would have preferred for sell-orders to go to the clearinghouse (rather than internally), to unwind from DTCC.
All stock brokers prefer trading "within" the system rather than seeking out 3rd party partners to find stocks / stock-buyers. Its cheaper and easier.