The FANG businesses seem more server/networking intensive than Apple's does.

I have a very 'armchair' perspective, but when I think about Apple and networking I think about iMessage and iCloud photo storage and that's it

FANG is for growth stocks; AAPL is not considered by Wall Street to be a growth stock. On the contrary, the prevailing view seems to be that Apple is on the verge of collapse.

Apple is a hardware company, basically. The 4 companies in that grouping are all internet companies.