This is so close to "allowing sells but not buys" that it is blatant market manipulation.
Now the hedge funds are of course trying to prevent this by calling favors from the brokers and putting out fake news that they've already closed out. Both sides are using manipulation and displaying the worst parts of our markets, our capitalism and even our character for the whole world to see.
At the end of the day, humans are greedy beings. It's totally natural, and we need to accept that. But as we accept it, we need to figure out ways to regulate that greed so that it is a force for good overall. Capitalism is based on greed, but that doesn't mean it's not the best economic system. On the whole, a group of entirely self-interested individuals can still work together in a sense to grow our economy, build new technology and make the world a better place.
Go ahead and explain how that is stealing?
Or if only retail is unable to open new positions, why are institutional investors allowed to open new positions and profit from the moves while retail cannot?