License names, while can technically be changed, involves far too much work for the devs since it's a nasty, un-automated process, so basically they can't be bothered. If they allowed it, they'd no doubt have lots of tedious work to do for no real gain, it's not customer support and at the end of the day you picked it, so hard cheese.
i thought a while back about changing my name.
well, as im not really rich i decided to leave it
[RCG] was the tag for the first team i was in Racing Center Germany.
but as u can expect it didnt last forever, oh well i couldnt change it anymore.
so i just decided that RCG does now mean [RaCinG]Boosted