> capacity to support a self-sustaining tech industry.

You mean the industry that includes tons of companies founded by immigrants or their children?

I'm not saying SV can be replicated elsewhere. But the code you're writing can be, if the price differential is big enough. Outsourcing is a PITA, so if the price differential is not big, why bother. But... if it's big enough, innovative people will find a way to make it work.

> This will close that spigot in favor of either the local talent pool or a foreign talent pool where immigrants find an employer to sponsor their application for permanent citizenship.

Or a foreign office without all the bureaucratic, nativist BS.