How much net profit do forex brokers like forex.com,ac market and other make per year?

I don't believe any of them are publicly traded company's so that information is not public.

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Forex Brokers earn brokerage per trade. So it depends on how many trades their clients do and how much commission/ brokerage they get per trade.

this ECN Broker is making too much money with retailand institutional clientswww.swissfxbroker.chPlus they are the best brokers ever in the forex market.they dont trade against you, instead they encourage you to be a profitable Trader. no restricktion on how and when you make your trades, most brokers do, telling you trading rules , like no scalpingBut www.swissfxbroker.ch allows scalping in real time quick executions on trades