prices are relatively stable across exchange but when there is price difference you can exploit. liquid technology network will be a good opportunity for user to buy bitcoin on exchange A, transfer to exchange B to sell at higher price. how ever, this must happen with an algorithm because manual process will take too long. additional, price difference must be large because even with liquid, you must wait 2 minutes for block time to confirm after transfer.

this is opportunity with futures to hedge out across exchange, so immediate short on exchange B (higher) while buying on exchange A (lower), assume you are then locking in the profit from difference between the prices