If you know how to earn money from the online market place, you can know how to earn bitcoin also. Because bitcoin is used as a payment gateway. It is a secured digital currency. If you are an owner of unlimited bitcoins. No one can find out you without your willing.

 The government can do it because no one can go through the crypto Unless using real money. In the market, you must go to use real dollars at any time. Then you will feel the need for a bank.  And the bank will deal with you without any tax? Of course not. On the other hand, KYC is the best tool for tracking.