Who decides what G it is going to be?

1G

2G / 2.5G

3G / 3.5G

4G / 4.5G

5G

6G

7G

8G

Blah blah blah G

How do they decide that it is an another G, no more the previous G? Does Each major speed difference has the name of the next G?

They speed up and call it the next G?

Who decides what G it is going to be?
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