That has little to do with money hoarding. One aspect of wealth is that it's a capture of some local increase in human-useful efficiency. The most common use o

That has little to do with money hoarding. One aspect of wealth is that it's a capture of some local increase in human-useful efficiency. The most common use of large amounts of wealth is to buy more capital. All systems have a limit to their efficiency, and even when efficiency improvements are possible, it's often not obvious or easy to achieve them. What is easier, though, is to decrease efficiency in a neighborhood you do not own, and then use capital to provide a more efficient solution to that neighborhood's problem in a neighborhood you do own. Clearly this is bad for the greater economy, yet is a good investment for the foreseeable future for those who can afford it.