Bit like the X factor isn’t it? One or two will make the big money with the great TCs, the rest will still be singing in the shower or karaoke !
Dont overlook the absolute importance of ‘ timing ‘.
Moving jobs/ companies/ types at the correct moment to get a promotion/ better pay etc.
My timing wasn’t bad and I got a command in my 30s, some I know has been awful ( not always their fault ) and means they are in their 40s with no sign of promotion on the horizon