We’re collectively sitting atop every piece of copper we’ve ever refined, they’re just sitting and rotting in landfills instead of mines.
If I were a gambling dinosaur, I’d wager that landfill mining in developed economies will be a decently-sized business in a few decades, as we seek to recapture minerals and materials we once felt were disposable - but whose easily-available raw amounts we’d gradually withered down via mining or extraction. Depending on how material science and metal valuation goes, it might become practical or necessary to extract those metals from water sources or industrial waste sites.
It ain’t pretty, but we were never going to be able to mine Earth indefinitely - and we’re already at a point where, as a planetary species, we need to be more organized and restrictive about the use of non-renewable resources for optimal outcomes and long device/product lifespans.
The era of disposability has passed, we just need more companies to swallow that bitter pill and start adapting.