The parent company/investor/whatever has a major short position on GME. By preventing Robinhood users from buying, they are reducing pressure on the short squee

The parent company/investor/whatever has a major short position on GME. By preventing Robinhood users from buying, they are reducing pressure on the short squeeze. Since Robinhood doesn't collect commissions there's no loss of revenue on trade volume. But driving GME's stock price down is definitely saving Citadel billions, and the class action lawsuit is unlikely to cost them billions.