244,000 metric tons of gold has been discovered to date, 55,000 tons of gold are left.
But there is still a lot of gold left in the universe. There is gold on asteroids for example. One day these will be minable. So the gold supply is not as limited as some may think.
However, gold is hard to move around, weighs a lot, it's hard to sell or buy, it's not practicable.
With BTC it's another story. We all know there are only 21,000,000 coins and 3-4 millions are already lost forever.
There is no Bitcoin in the whole Universe, except on Planet Earth.
BTC is scarcer than gold. I think one day 1 BTC will enter the $xxx,xxx zone then the $x,xxx,xxx HODL BTC
Ofcourse, it's scarcer. However, Gold is scarce doesn't mean the undiscovered ones are getting exhausted or are that low in quantity. This World is unbelievably hugh and humans have only discovered a very little part of it. I would invest more in searching for gold in the world than elsewhere.