I guess you are talking about companies with other economic activities than just trading, and trading with brokers that are not branches of the commercial bank in question. I use my commercial bank only to wire in/out of brokers, pay salaries/dividends, accountant, travels and other expenses...
Exactly, any brokerage I do is just forex transactions to actually move money between affiliates. I imagine if you're just doing trading they give you a lot more know your customer grief, which is what it sounds like you're seeing.
