I mean fostering and nurturing any reason at all for these people (and people like them) to stay in the EU and not work for US based "exploitative mega corporat

I mean fostering and nurturing any reason at all for these people (and people like them) to stay in the EU and not work for US based "exploitative mega corporations". Why do so many EU citizens see working for (or trying to start) a US based "exploitative mega corporations" the best way to achieve their tech goals.