Kind of an "unstoppable force meets immovable object" problem here.
It may have looked like a compromise, but I feel certain that Apple walked away from the negotiation feeling that they got exactly what they wanted.
My first question though: How long will Apple continue to manufacture M1s for sale at Walmart? The M1 has a ton of life in it for normal users. Yes, 8GB, but that's still plenty for most people doing most things.
My guess is that this is a big-retail liquidation of devices Apple is ready to move on from, and not a new long-term price point. We'll see!