"A" writes a "smart contract" on Ethereum. Since "A" isn't perfect his "smart contract" isn't either. "B" finds the bug in "A" "smart contract." "B" steals "A" ETH.
if "A" was one of the whales like Vitalik, then A orders another fork (roll back) to recover his funds and everything is back to normal for A.
then price of ETH starts falling hard, whales put up gigantic buy walls like before to prevent the crash after a month of people dumping and whales putting up walls we see 3 chains ETH, ETC, ETX
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Repeat... Repeat... Repeat... ETH goes to $0!
ETH comes down but doesn't crash because of walls!
ETX rises because it has a lot of demand from angry users seeing another dictatorship fork and whales start dumping their ETX and making money to put more walls on ETH