This would be cool for starter but if you really want to make it big in crypto you need to think and act like investors. Those effortless taks will. Earn you not enough, however, investing comes with risks by it's worth it.
Some people have money to invest and also can take risk of losing their capital to make more money but most of the people cannot afford it so they are finding different ways to make crypto currencies which is also not free they are giving their time and efforts to make it.