It's a fair question. A bunch of the larger guys like Charles Schwab and TD did implement restrictions as well.
In their case, it may not have been a necessity to maintain liquidity for other assets, but capping the exposure to how much capital they were putting down for it probably still made sense.
In their case, it may not have been a necessity to maintain liquidity for other assets, but capping the exposure to how much capital they were putting down for it probably still made sense.