[gruez]

>Robinhood, along with half a dozen other banks/brokers who were well capitalized

They weren't well capitalized. What gave you that idea? Just to preempt the "but DTCC said so" reply: https://news.ycombinator.com/item?id=28000185

>and continued to do so until the price was 1/10th of the high

Because the price isn't a relevant factor. GME being 1/10th the price just means that people would buy 10x more shares, leading to the same deposit requirements.