Not necessarily. Intel could easily walk away from some of its margin. Even the latest Qualcomm SoCs aren't particularly fast compared to modern intel CPUs, so

Not necessarily. Intel could easily walk away from some of its margin. Even the latest Qualcomm SoCs aren't particularly fast compared to modern intel CPUs, so intel would still maintain its high-end. That doesn't mean ARM is inherently slow. Apple's SoCs are much faster on single threaded tasks than Qualcomm and Samsung's, easily approaching modern intel CPUs.