How can Apple earn above-average returns if they used both the industrial organization model and the resource-based model?

Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1490

Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1495