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
"BTC is scarcer than gold" is an irrelevant statement, while there are only 21 million units in circulation there is potentially the ability to go to infinite decimal places when discussing units of Bitcoin, it's no way to define the value of an asset. It'd also be interesting to see how you came to the conclusion that there are 55,000 tons of gold left because that is at best a wild estimate. Bitcoin certainly does have some advantages over gold - as you say it is much easier to transfer between parties in a secure way. However gold also has advantages over bitcoin, like being a precious metal with industrial usages and some rather useful metal properties, as well as being highly sought after in jewelry manufacturing.