Heretofore, the G meant cellular technology generation, it looks like '5G' will be the last that is defined
by cellular technology, and in turn is the first be defined by cellular billing.
'Free G' means the generation after paying for cellular (not like Free Willy)
IEEE tries to be a part of '5G', some mmwave tries to be IMT-2020 bands, 802.11ax tries to be considered as a '5G' technology, etc.
I am saying the next 'generation' will not be defined by cellular licenses, nor by cellular technology, nor by cellular billing.