WHERE DOES THE MONEY COME FROM?

IF YOU FIND GOLD WHEN YOU PROSPECT YOU CAN GET MONEY FROM PEOPLE WHO WANT GOLD, WHO USE IT AND BENEFIT.

IF YOU MINE FOR CRYPTO CURRENCY, HOW DOES THE PRODUCT BENEFIT ANYONE EXCEPT BY THE VALUE OF THE CRYPTO CURRENCY RISING.

NO ONE IS BUYING A PRODUCT THEY USE, SO DOES NOT ALL THE MONEY WHICH IS MADE HAVE TO BE COMPOSED OF THE LOSSES OF OTHER PERSONS WHO INVESTED AND SOLD OUT AT A LOSS OR WHOM DID NOT GET THEIR MONEY BACK FOR OTHER REASONS, LIKE THEFT?