That's actually a cooperative relationship, that is, the expatriates from futures companies are stationed in securities companies. Because a securities company gathers all its stock customers, they may not have the rights of futures account, so a legal futures company name is needed at this time.
The IB department is almost of this nature, mainly dealing with stock index futures and incidental commodities. Then the fees charged by the futures customers in IB will be shared with the securities companies where they are located, which will have a win-win effect.