Exactly. GaN FETs are slowly taking hold of the market, due to their ridiculous performance capabilities (mainly being able to switch much faster than silicon for the same losses). I think there was a car manufacturer who reckons there would eventually not be any silicon power transistors in their vehicles, they would all be either GaN (for lower voltages) or SiC (for higher voltages).
Oh, thank you. Very interesting, that is exactly what it is: