Even this would be a substantial discount for most qualified people.
$120/hr * 40 hrs/wk * 50 wks/yr = $240K before self-employment taxes and paying for insurance. Ends up being comparable to typical compensation in cities that aren't SF, Seattle, or other top-tier markets.
Now if someone was doing more typical ad-hoc freelance work on a project basis, $120/hr might be too low for typical work. However, $90-120/hr as a contractor with a long-term contract and stable pay over 12-18 months is not uncommon.
Unless someone has a lot of new, small contracts knocking at their door nonstop, it can make more financial sense to take a $120/hr long-term contract over sporadic $200+/hr work that changes month to month.
$240K/yr, minus self-employment taxes, insurance, and other overhead, not to mention the lack of other non-monetary benefits and comp, is not a lot for someone doing serious machine learning.
I'd imagine that the type of specialized talent that Intel needs to catch up to AMD have plenty of options open to them. A comp strategy based on median industry comp might work to maintain their position, but probably won't churn out new industry-leading tech needed to jump ahead.
Some professions typically require both a related degree and one or more certifications or licenses. Accounting is one of those (CPA, CMA, CFA, CISA, CIA, EA) and this ends up being reflected in the hourly rate.