A comment pertaining to startup "common sense": You clearly have no domain knowledge. How do you presume you could even identify whether there was a market oppo

A comment pertaining to startup "common sense": You clearly have no domain knowledge. How do you presume you could even identify whether there was a market opportunity, let alone contribute anything to any startup you might found? This is something some law firms in some specific countries might attempt. Now regarding your question, your first stop should be a notary that deals in estate management, particularly somebody who deals with inheritance a lot. Through their job they come across all kinds of weird tax schemes regularly and would be up to date on the topic.