The phrase "wonderful complement" means something that enhances or goes well with another thing, making it even better or more complete. Full definition
In the case of Qualcomm, licensing and chip - making may be very different from a financial perspective, but they're wonderful complements from a strategic and sustainability point - of - view: chip - making produces patents, which in turn generate outsized profits that enable Qualcomm to invest significant resources into developing new chips. (stratechery.com)