Wow. Are you really claiming Apple gets moral high ground for its salaries even after criminal collusion to keep them low?
As Apple's aptly demonstrated, it doesn't pay those salaries for any other reason than that it must, and even then it will break the law to pay less.
Finally, most US Apple employees are located in California, where cost of living is substantially higher than most of the country. There's far less disparity in your figure when taking cost of living & the common academic pedigree of Apple's employees into account.
As Apple's aptly demonstrated, it doesn't pay those salaries for any other reason than that it must, and even then it will break the law to pay less.
Finally, most US Apple employees are located in California, where cost of living is substantially higher than most of the country. There's far less disparity in your figure when taking cost of living & the common academic pedigree of Apple's employees into account.