I've seen people say this is all part of a move by big finance to protect entrenched interests. I'm cynical enough to entertain that possibility, but what real

I've seen people say this is all part of a move by big finance to protect entrenched interests. I'm cynical enough to entertain that possibility, but what really would be the leverage/pressure they could put on Robinhood to accede to this? Presumably these moves will hurt Robinhood with their users and possibly introduce legal liability.