Almost everything has a virtually unlimited supply if you invest more time.

Monero has less inflation than gold. And unlike fiat money, it's creation is predictable. You can never mine more than 0.6 XMR every two minutes.

Monero is meant to be used as an ideal P2P digital cash. Save with Bitcoin if you think SoV trend will hold. But honestly any prediction into the future is speculation. Bitcoin can control the supply side of the equation, but the fickle demand side is out of it's control.