Many government agencies have overlapping and important data. NOAA, Federal Register, HHS, FCC, and others are beginning to offer more of it as APIs. As more agencies do the same, there are strong benefits and efficiences that can come from agencies making a point to consume each others APIs when creating new products for the public. They can create mashups of their own data with that of other agencies to create products that are even more informative and useful to the public. This will drive further adoption and usage of APIs by government.
As a result, duplicative efforts will become more pronounced and can be phased out and integrated across agencies. Collaboration will be reinforced and set as more the norm than the exception as it currently is.