Both sides are expensive. Early finality can create costs, and ability to reverse also means effort. I think, most legal systems are setup to make reaching fin

Both sides are expensive. Early finality can create costs, and ability to reverse also means effort. I think, most legal systems are setup to make reaching finality on material things pretty expensive (but also very difficult/impossible to challenge once it reaches finality). Overall, societies seem to work well that way given the pretty long track record.