At first he thought that meant becoming "the next Iron Man" but he eventually realized that it simply meant to make Spider-Man the hero that Tony knew he could be, and that's exactly what he did.

During this process, Harry runs into his old friend Harmony Faith Lane (Michelle Monaghan), who’s trying to make it in Hollywood ... he conveys a man with good intentions who just happens ...

Stark's death in Avengers: Endgame would obviously make that particular dynamic very difficult to replicate, but Ironheart is expected to carry on Iron Man's legacy (to some extent, at least).