Lower tax rates for particular industries help all companies in that industry. Once every company has disclosed its technologies, protocols for communicating, and interfaces, another layer of secrecy will be peeled off the onion. Companies will make choices about business partners based on technological compatibility, but even then there will be options within the same technology. The real competitive advantage then, will be in maintaining customer relationships. That's the key.
Business development is about developing relationships with the right partners.
Customer service is about maintaining those relationships. Build and maintain relationships with these other businesses, and provide service and value that goes beyond your technology and infrastructure.