Even in the movie they weren’t technically aliens. It was just ancient sapient black goo that was here long before we evolved.

You paid the plumbing company $300/hour. The plumber would be lucky to make $30 of that.

They’re not going to make any money selling to other rich people. They didn’t get rich buying someone else’s trash.

Learn code anyway. LLMs can’t code worth a shit, so there will be plenty of jobs available to clean up their mess.