99% of US companies with EU offices will NOT pay you anywhere close to the US level of money, IIRC the offer I received from Atlassian in Poland some years ago was not even competitive with the local market.
+1; international offices are subsidiaries of the parent company, They’re setup to comply with local laws and also pay local market wages (vs US wages).
Any sane bigTech company in the US won’t want to deal with complexity of hiring EU staff directly, as the US HR staff will be on the hook for EU & country specific HR laws, tax requirements, benefits administration etc.
Those tax changes are irrelevant - you can make double for the top of the local market working remote for US companies. Several percent in taxes doesn't make a difference at this point.