HA.
I was with you until Jun 2020. You are expecting approx 50% drop. If BTC hits 60k that means the market is around 2.5T - so you are basically saying that 1.25T will decide to leave the market (assuming BTC still dominates in 2020). BTC is a currency and lives by utility. For it to dive 50% then you should explain what would make everyone reduce their holdings.
I would think by that time BTC would be even further integrated into the economy. If it drops 50% then you are saying the economy will tank hard as well.
can't you see the source ? I am just sharing the info that I found !