The bitcoin seems unaffected by the first two pandemic at those time, while now the COVID-19 looks so impactful but why?
First, the World Bank pandemic fund, which was to expire in june this year, got called out by the WHO, when this organization declared a pandemic. This is a half-billion dollar fund from 2017:
https://qz.com/1017805/the-world-bank-issued-425-million-in-pandemic-bonds-and-derivatives-designed-so-investors-pay-in-the-event-of-an-outbreak/This created a snowball effect in the markets, as big investors had to pay for the fund, thus taking money from other funds, which caused a crash in the legacy (ie, fiat) markets. Bitcoin is being used by hedge funds since 2017, so they shorted it to cover the snowball effect.
Second, derivatives speculation. Without Bitmex, the price would have fallen to 5k and we would be at 9k now. With Bitmex, the price didnt go to zero because of a hardware failure in their servers. Derivatives use leverage to bet into bitcoin prices, like in a casino. Bitcoin is liquidated to pay those who bet into a crash, so the price dropped to 3k. I warned about derivatives several times since 2017, but people ignored it. Bitmex is not alone on it, there is also CME and Binance futures as well, but Bitmex answer for most of it.
These were the two determinant factors here. They prove bitcoin is pegged to the legacy system, and is no more a store of value, like it was believed earlier. If the system crashes, bitcoin will go with it, being used as hedge to mitigate losses for big investors. Add to this the derivatives casinos and you have a recipe for disaster.
Things like the pandemic fund will not happen again, but the derivatives casinos will keep the price down, causing a permanent bear market. It happened with gold and silver.