Silver has been in a positive demand since about 2006, meaning that investors are buying more than selling.
The total above ground silver grows only very slowly, about 0.5% a year, less than anything, even the population grows more.
I used to be a gold and silver bug for years until I discovered Bitcoin. And then suddenly it hit me as to the reason that gold and silver only slowly appreciate, even though fiat money is being printed like crazy. It was a mystery to me why gold has only just reached its 1980 peak in inflation adjusted terms, and silver is still way behind. No wonder stupid conspiracy theories float about price suppression.
The real reason the PMs languish at the margins of the world economy is that they are
no good for remote payments. Yet 99% of payments (by value) in a modern economy are transacted remotely! People are all forced to use fiat because of the technological society we live in.
Drum roll.... That is why Bitcoin has so much potential, it is scarce like PMs, but fantastic for remote payments. There has been nothing like it before.