Earlier quoted context omitted.
my response above about intent is wrong, but the rest still holds imo.
So the difference is entirely in being able to find out whether you're infringing or not? Surely that's solvable with a EULA that passes the responsibility onto the user to search?
Popcorn time vs. bittorrent.
And you are right the EULA could say "it's up to the end user to confirm you can use this code". But then how do you verify? That slows down "productivity" where copilot promises "speeding up" productivity.