2016 is the year of the ponzi scheme, and 2017 is the year of cloud mining, in which even mobile phones can mine via browser and others will purchase powerups to increase hash power. Also, bitcoin was inexpensive at the time. I remember those times and they made me laugh; I was once scammed in a ponzi scheme and never tried it again, nor any other seemingly too good to be true investments. Though, for sure, we learn from them, so it is still a good move for us as long as we have a lesson that we get.