It's blatant protection for short positions. These brokers are hamming up the "we need to protect retail from volatility" narrative when they're clearly trying their best to stop their business partners from going bust.
It's sickening.
Let's be clear about a few things. Brokerages do not care about protecting retail investors, they only protect their customers when forced to do so by regulators. What brokerages do is protect themselves from liability, financial losses, and scrutiny. They have no problem screwing over their customers when it suits them. They will raise margin requirements and force customers to take a loss as soon as their risk models say that they should do so. They will restrict trading whenever it looks like there is a scam, simply because it wards off possible investigations into their business.
What they can get in trouble for, and RH did get a slap on the wrists for already, is working against their customers' interests for the benefit of their business partners. One brokerage I could believe, but I doubt that half a dozen would all do it at the same time and with the same securities.
I can see the nice narrative of allowing retailers to sell ("capture gains"), but it's indefensible to only allow selling.
That's _blatant_ market manipulation.