Bitcoin (and other cryptos) erode the power of government, the only entity who is able to force people to do something...
In a world where the predominant currencies are descentralized, free market rules... And in a Free Market, there are no "barons", except those that gain money through merit... But even the richest, in this model, can only get things by buying things from others...
And since the rich need much more then people to clean toilets and scrub floors to live the kind of life they want to live, your hypothesis is completely flawed...
On the other hand, in today's world of completely centralized currencies, it is EXTREMELY common to see real barons who do and produce absolutely nothing(a.k.a. government officials), but live as kings... And they do whatever they want with your money, especially through inflation, since they are the ones that print the money being used, which gives them almost unlimited power, including the power to create bubbles and crisis, such as the one in 2008 and 1929...