What guarantee do MOs and GCP licensees have that the resolver service won't be discontinued?

The resolver is part of the GS1 Registry Platform and so is part of the long term strategic vision of the organisation as a whole. The Product Roadmap looks to increase significantly the level of integration of the key registries with the resolver. This points to a long-term commitment to the GRP and the vision it embodies, as supported by the decisions of the General Assembly.