> the ITU has a structure that accommodates voices from many regions, but primarily government and large corporate voices.
The ITU (like the UN) is bogged down by bureaucratic workflows and politics, so there are good reasons for the proliferation of relatively speedier standards organisations. But, what is ostensibly emerging there (unlike the ITU) is a core-periphery distribution of organisational expertise, which can be seen in meeting locations too as pointed out by Anupam and Benson. There is some path dependency here and also a bit of cake distribution. There is no correct solution here - other than online, these activities have to converge at some physical location(s) after all, but as the IETF evolves, an effort certainly has to be made to avoid "core-periphery" designs from becoming a defining organisational characteristic.
regards, Shashank