[shubb]

What is interesting with MapBox, is that they essentially offer functionality similar to Geoserver + Openlayers, but with a far more focused, nice, modern user experience.

Certainly in terms of government systems, I think companies sell to people who will never use the system. Procurement people who worry about getting locked in by Mapbox just like they were with ESRI. Government IT people who want to host everything locally. Sadly in that kind of a sale, user experience doesn't matter so much as it should.