Imagine you had a daily income of 40$ each day in bitcoin, what would do with them and where would you invest them ?
If I'm earning $40 / day then I will just simply keep on holding it and there's no other things that I will use that amount. And if I have save enough a lot of bitcoins let's say for a year. I will cash it out and open a time deposit bank account and that is going to be my first outside investment from bitcoin but still I will keep on holding bitcoins.