We will see. Apple Music, Apple Lossess codec and Airplay2 haven't lived up to being the best option available. It may turn out this Apple DAC patent has drawbacks as well. We won't know until a working implementation is available.
If you refer to ALAC, while I do not claim it is the "best" option, why isn't it on par with the best? FLAC will have marginally better compression at the highest levels, but ALAC requires less computational effort decoding. Apple Music is also quite good, especially the lossless options for Classical Music.