Why GARP changes syllabus/reference books each year

FRM syllabus is more volatile than markets. I donot see the rationale of such rapidly changing syllabus.

If we accept the GARP’s argument that risk management is a rapidly changing profession, then what is the validity of certification 10 years down the road.

Believe there is an inherent interest in GARP to make FRM appear more relevant/updated than PRM.

GARP would do well to have a core set of books as CFA institute does than changing books for the sake of it.