He wore his suit more in the avengers movies and cap 3. Idk why his 2nd and 3rd movie were so adverse to him wearing the damn thing.
Maybe they thought he was to OP with it and all his wealth and resources available so they took it all away. Heroes in his position are pretty rare tbh so I guess they just didnt know know to make a Iron man movie otherwise.
Also why rich superheroes arent a thing anymore aside from those grandfathered in.
It's weird how much the 3rd movie of a series really liked keeping them out of the suit. Cheapass budget reasons? Iron man, batman, Spiderman... it got so ridiculous. So glad the late 2010s era ended that trend