Yep, many FAANG employees got rich trading during lockdown.
Crises of this magnitude always benefit those with liquid assets / cash who can afford to buy out those who have to exit out of (financial) pressure and ride out the crisis. The 2008ff crisis was just the same - whoever bought a house at fire-sale foreclosure rates back then now has a lot of net worth.
TL;DR don't bet all your money on one horse. stock. whichever.
(This is not financial advice, I am not a financial expert, and results from the past are not representative of future results)