Morningstar Wealth's William Kerwin offers his takeaways on Apple (AAPL) just ahead of the Mag 7 giant's first earnings under new CEO John Ternus. He believes the company's undeniable tech moat from products like iPhone and Mac offer plenty of leverage for future AI endeavors through Siri. William notes that Ternus' product focus is a plus for the company but remains hesitant on Apple's valuation as the stock trades at a P/E nearing 40.