My secondhand understanding was that Intel was losing top talent due to pressure to pay closer to median industry compensation. Top engineers recognized they were underpaid and left the company.
I've been part of a similar downhill slide at a smaller company in the billion dollar revenue range. To be blunt, once the [mediocre] MBAs start realizing that the engineers are getting paid more than they are, the pressure to reduce engineering compensation is strong. Frankly, there are plenty of engineering candidates on the market who are happy with median compensation. Many of them are even great engineers and great employees.
However, being a top company in a winner-take-all market requires the top engineers. The only way to attract and retain them at scale is to offer high compensation. I'm hoping that's part of what's happening here.