Many fabs are not in China, and you can't just magically snap your fingers and build a chip fab.
The capital requirements are huge. You need vast quantities of ultrapure water. You need a friendly government that will look the other way to you dumping toxic waste somewhere. You need lots of highly technical staff. You need lithography machines that are some of the most complicated and expensive electromechanical devices made. And...lots and lots and lots of capital.
The capital requirements are huge. You need vast quantities of ultrapure water. You need a friendly government that will look the other way to you dumping toxic waste somewhere. You need lots of highly technical staff. You need lithography machines that are some of the most complicated and expensive electromechanical devices made. And...lots and lots and lots of capital.