Back when Apple, Google, Adobe, Intel and other big tech companies signed illegal anti-poaching agreements Zuck said no, I'll pay whatever it takes to attract the best talent, no matter where they work.
Facebook/Meta has consistently set the bar for engineering salaries across the industry, and Google and the rest are forced to match it.
Now every AI company is paying millions of dollars for regular engineers just because Zuck is out there throwing out wads of cash from the roof.
When it comes to salaries the man simply does not care about standards and precedents, and I love that.