>Suppose Apple monopolizes the high end market. They take 75% of it using the process advantage, then take the rest as the network effect from that crushes alternatives. They're now your only customer for the newest process nodes, so they squeeze your margins to zero. At the same time, they buy Global Foundries and pour money into it until their process is better than yours, and you no longer have the money to compete because you let all your other high end customers be destroyed.

It's what Apple did to Imagination Technologies and tried to do to Samsung.