It's a lot of things. But complex tech can involve literally thousands of hardware engineers. Each with very specific skills.
The proximity of these highly skilled workers to cheap chinese labour is another reason why this is difficult to replicate elsewhere.
War against woke is going to tear the USA in 2. As fucked up as SCOTUS repealing Roe V Wade is/was... it effectively established which states will be pro-science and which will be pro-ignorance.
Global supply chains are going to collapse/change-drastically. The administrations built on ignorance will inevitably fail as the world embraces renewable tech and abandons 20th century economic models.