Had Jobs kept Apple only in the computer business trying to sell colorful expensive iMacs as alternative to cheap gray PCs, they would have long been bankrupt and their carcass devoured by Dell or Lenovo by now.
Boeing doesn't have any other new untapped markets they can enter and dominate. Come to think of it, neither does Apple now. They tried with the Vision Pro VR helmet thingy but that was a massive flop compared to the iPod and iPhone, coupled with the the shut down of their rumored secretive EV program, so they're left keep trying to milk that 30% AppStore fee as long as they can get away with.