I don't think metrics like P/E ratio are as useful as before any longer when analyzing companies like this. The FED printing money and lack of other investments in this zero-interest rate economy has a significant role in raising stock/asset prices.

they are still expanding their offer, with Apple+ and whatever Apple-not-quite-prime will be coming.

Also, Apple Silicon might be the beginning of something.

They're still overpriced, but I wouldn't look at them as having exhausted their potential increase in revenue/profits.

There are two ways to make money off a stock - either Apple can keep growing or issue dividends.