Actually I have a highschool classmate that knew bitcoin and this forum since 2009 but on that year since bitcoin is not valuable as today, he did not make himself focus nor invest in bitcoin. As far as I know, he have bitcoin which he was trying to retrieve in 2017 but I think he failed.
Well on my part, I can't say ai did an early investment because I become interested to bitcoin when its price is already high and kept on rising in 2017. But even though bitcoin is already expensive during 2017, I still gained profit not by buying bitcoin but by joining campaigns. It makes earn big amount of money at young age but also makes me lose big amount of money at that age due to I wrong decisions.