Looking at Philly's history, why would we expect them to consider trading Fultz, except for an extreme overpay?
I'm sure if we offered them Jaylen or Tatum they would "bite," but outside of them getting a home-run offer, they have never traded players with perceived low value, out of principal in the cases of Embiid/Simmons, and also out of sheer stupidity in the case of Okafor, who they could have probably got a first rounder for before they denied his option.
Philly is dumb. I hate their draft strategy. I feel like it will blow up in their face, likely with Embiid's career being cut short (shame because he is fun to watch).