Do we not have these metals now, before we've done a single bit of seafloor mining?

Lack of those metals is one of the key limiting factors holding back the electrification and re-industrialization of the US economy.

[citation needed]

Asteroids mining!

>Asteroids

Every time I see this I am taken back to a time when you could walk into a convenience store and drop a quarter into a machine and blast asteroids to smithereens until you made one last mistake and hard to drop another quarter. Thanks!