What is wealth? 

The landowners were rich.  The land was real wealth.  Also, wealth is slaves.  Slaves cultivate the land, and landowners get rich. 

Then loan capital appeared.  Gold has become valuable.  Derivatives for gold, such as promissory notes, emerged.  The bill is very handy if you are traveling. 

The financial elite gradually began to dominate the landlords.  Then industrial capital arose.  The capitalists began to compete with the financiers.  There were stocks, bonds ... Slavery was abolished. 

The landlords finally lost power.  In the XXI century, IT technologies have developed.  The problem arose of the redistribution of wealth from capitalists and financiers to IT specialists.  One of the instruments for this redistribution of wealth is Bitcoin. 

Many IT pros in the 21st century have become millionaires thanks to bitcoin.