Sometimes the reason a fence exists is because the person who put it there was some combination of a) an idiot, b) extremely confused, or c) not qualified to construct fences.
Also, in software, you may find the fence sometimes exists in higher dimensions than the usual three, can turn invisible for part of its length, and occasionally exists but is four inches tall and blocks only mice. And it may also be designed, at least in part, by a blind idiot god called ChatGPT on whose altar consciousness itself is sacrificed. At this point it's worth considering whether keeping the fence around is worse than letting the bull out.
Market-based hypothesis is that the person erecting the fence incurs costs and if the expected value of the fence isn't higher than the cost of erecting it, it wouldn't have been erected in the first place.
Of course mismanagement happens but the implied value of understanding why the fence was erected is to understand the expected value it would bring and understand the problem it was trying to solve. This does not imply that it should have been erected, just that there were others before you trying to solve a problem and if they're failing it's important to know why so you don't fail in the same way.
Also, in software, you may find the fence sometimes exists in higher dimensions than the usual three, can turn invisible for part of its length, and occasionally exists but is four inches tall and blocks only mice. And it may also be designed, at least in part, by a blind idiot god called ChatGPT on whose altar consciousness itself is sacrificed. At this point it's worth considering whether keeping the fence around is worse than letting the bull out.