Was a billionaire yesterday...

Q:
How it’s possible they were so stupid to keep their private key on plain text on a cloud service?
A:

They were no less stupid than the average cryptocurrency investor who keeps his coins on CEX, online wallet, or cloud/email. A fool who has an empty wallet and a fool who has 100 000 BTC in a crypto wallet are still fools who face the same fate. They could have lived like kings all their lives and stayed under the radar, but it still required intelligence they obviously did not have.
The more that we find out, the more implausible the whole story seems -... yet we do know that some dumb peeps do exist in this world, but somehow they might end up coming across fortunes of BTC or some other cryptos. Something is missing in this story in terms of transferring online and into one wallet rather than maybe having some coins spread in various other places..