$10M per bitcoin would put total Bitcoin market cap way past gold. Although we would love to wish this narrative, I don't think we can surpass gold's $7+ trillion market cap anytime soon in 10 years. There would have to be severe, unforeseen catastrophic events in human history to push that price to a valuation way past gold within a decade.
This is about to happen. We wont have to wait that long to surpass gold market cap.