It is possible on bitcoin. MEV stands for "Maximal Extractable Value". How much maximum value can be extracted from manipulating the order of transactions in mempool.
When a validator sees a good profitable transaction in mempool, (MeV bots increase the gas price for the same transaction to get executed first but the validator does not have to. validator has full autonomy over the mempool), it places the same transaction and puts its transaction in front of the original transaction so its transaction gets executed first, and gains that profit. It mostly happens for arbitrage opportunities. if you check MEV Explorer, 99% of transactions are for arbitrage. Arbitrage happens with
Defiand sincebitcoinhas noDefiyet, there is no opportunity with "MEV" in the bitcoin blockchain.Another use case for
MEVis if a validator sees a big buy order for "X" token, the validator places a buy order for the "X" token, and reorder the transactions in mempool so that its order gets confirmed before that big order, then if big buy order gets confirmed, price of "X" token will go up and the validator will make a quick profit. Since bitcoin volume is very high and volatile, no validator can make a move if they see a big buy order for bitcoin.
Both examples are front-running examples.