Every country cannot be self-sufficient in everything
But it is a good thing that more countries will become self-sufficient in more things. However, if there are more countries selling the same goods, prices will fall.
In the end, it just might mean less international transport of said goods since there will be less countries that need those goods.
On the other hand, more silicon fabs means more poisoning of underground aquifers, and that just can't be a good thing. I really hope that those countries will have a good grasp of controlling industrial pollution, else the health impact of their self-sufficiency will be ghastly.