GME & AMC - Supporting the Hedge Funds ?

[DFJP]

I would like to pose a very simple question to IG. Whilst increasing  margins to 100% on shares like GME & AMC, due to volatility, is understandable, how does restricting buys on share purchases help anyone but the hedge funds currently losing money. By restricting further purchases, existing shareholders (which does not include me) are clearly being encouraged to sell and cannot buy, which will ultimately result in the share price cratering. Am I missing something or is this an obvious case of market manipulation ?  

[combi]

IG is not only restricting further purchases but they want to Force Close all existing positions of AMC and other companies. Despite me/we had positions opened for years and kept paying daily commisions. No legal ground to do this. DayLight Robbery.