To what extent (if any) do you think the high salaries offered by US institutions will prevent brain drain?

I have been thinking about the expected resilience of the US academic ecosystem in the face of the current attacks by the ruling government. It is a uncontentious fact that the US salaries of postdocs, associate and full professors can be 50-60%+ higher than those found in the United Kingdom and most of continental Europe. Switzerland might be the exception, but it is a rather small country (9 million inhabitants).

At Oxford, one of the most prestigious universities of the world, the starting salary for an associate professor (30S in https://finance.admin.ox.ac.uk/salary-scales) is some 60,000 USD before taxes. That can be very well the salary of a US STEM postdoc. Interestingly, a new UK postdoc would be paid some 45,000 USD (grade 7 in the same link), and this is a set salary across the whole of the UK.

My feeling is that even if the unjustifiable NIH cuts are actually enacted (this will end up in the SCOTUS; the cuts will be stalled for some time), any affected academics would seek positions in industry. This will depress salaries, but not to the extent that European industry would become palatable. Furthermore, deregulation will entice companies to increase R&D spending.

Am I being naïve in thinking the US ecosystem is sufficiently resilient just by virtue of its sheer scale and interactions with the private sector?