You know, it's kind of like this with land. Laws around Adverse Possession (Squatter's Rights) are basically the legal framework for taking possession of land when someone has so much land or are so absentee that you can use it without them noticing. Generally, if you you can use their land openly and they don't challenge you, after a set period it's yours.

Don't know how this would work with money, but it's interesting that you can legally take someone's property if they have too much to manage it properly and you need it.