[jonreem]

these are transactions with extremely high value and often extremely urgent and not possible to merge together - e.g. the both liquidate the same unhealthy loan position (could be worth ~$10m+)

the whole point is it's not remotely easy to just "reconcile separately" when you have two mutually exclusive financial operations - these are not code changes made by mutually cooperating developers happy to change their code to resolve merge conflicts, they are actively fighting against each other

edit: this also point out how having a centralized entity decide the ordering of transactions is a horrible idea - sequencing is worth enormous amounts of money and you could not be trusted to resolve transactions in a way that is sometimes against your interests but in the interest of other participants in the network

[endisneigh]

you might have to elaborate because I don't understand. all transactions between N-entities are inherently mutually cooperating.

how would a transaction between members be "fighting against each other?"

[jonreem]

outside of trivial transfer transactions there are much more complicated things you can do with smart contracts such as decentralized lending and decentralized exchange of assets

these are more like arbitrary atomic changes to on chain state that can affect many wallets and different contracts (and depend on the existing state) rather than just a transfer from my wallet to another address, which can be reordered freely

see protocols such as uniswap, compound, aave, synthetix, sushiswap, liquity, etc.