When you think about who really has the most power and earn the most profit... it's the miners of a cryptocurrency. Assuming stable prices of course. lol
Is it fair to compare them to shareholders in a company, where the currency is the product?
Well honestly it is ok to compare the shareholders and the cryptominiers. They are both "holder" of the coin. Share holder buys the coin for them to hold and miners mined the coins for them to hold as well. Both of them are sharehilders of the coin, they can also sell the coins if they want .