It's way too early to tell how Apple is going to end. They've only been where they are for a small number of years. What happens if Zen3 turns out to be significantly faster than Apple Silicon, or next year Intel gets 7nm right? Do they abandon it or do they fall behind? What do they do if Google gets worried about their market share and decides to start selling a top of the line phone for cost and marketing it on google.com?

And the opposite failure mode is just as bad -- you actually succeed in monopolizing the market and then get smashed by antitrust.