I don't think your point of view is fundamentally flawed, except for resource constraints.
Having a national/multi-national brand use Go800 is a great third party endorsement. In that sense, your work is complementary to having a few large anchor clients endorse the G0800service in their promotional material.
Your work is not a substitute for having those clients. The resources required to gain the reach of some (inter)national brand anchors would convey is too great for GOIG at this time.