Let us be clear; the purpose of non-accumulation is not to exculpate oneself from the crimes of a money based civilization. That is merely ego. You don't get virtue points for poverty; non-accumulation is not a goal in and of itself. The goal is to enjoy true wealth, the wealth of connection and flow; rather than the counterfeit wealth of having. But what if you have wealth beyond what you can share in the ordinary flow of life?
To the conscientious person, such wealth might seem to be more a burden than a gift. We are bound, and we are pleased, to make right use of what we have been given. Wealth is no exception. Those who are blessed and cursed with a lot of it have no more reason to abdicate its duties than anyone has to spurn the gifts, responsibilities, and opportunities to serve that we are each born with.
Excess wealth, whether inherited from family or from an earlier time in one's own life, carries with it a desire to use it well. It is a dharma, a call to service. The challenge of excess wealth is to give of it in a way that is beautiful. This is the kind of investment that is aligned with a future economy in which status comes from giving, not having; and security comes not from accumulation, but from being a nexus of flow.