A gateway can be just as profitable as a centralized exchange. They can still charge fees for moving UIA's, and additionally they can gain delegates to further incentivize integration.

How can we convince existing exchanges to agree to become gateways to BTS once they realize that doing so will contribute to their own eventual demise?

Maybe I am giving them too much credit, and many will simply see BTS as yet another opportunity to collect transaction fees. Nevertheless, are there any legal entities besides crypto-exchanges that can we go after as potential gateways?

Like credit unions, money transmitters, banks even? Just brainstorming...