Yeah but taxes aren't why. Its the rigged financial markets that have swiftly vacuumed up all the money and put it into the hands of those that - guess what - handle money.
There is no one why, there's a host of things that allow wealth accumulation and they all need to be tackled, but inherited wealth produces dangerous people: aristocrats who have no idea what it means to work and no appreciation for those that do, and that cannot be ignored.
And without all that wealth accumulation, the financial markets wouldn't be rigged. They were rigged by the wealthy buying politicians to get the laws they like passed. The markets are a symptom of the problem, they aren't the problem itself; accumulated wealth is the problem.
Nope, that's just treating a symptom; they'd just immediately break the market again and that's putting aside the point that they own your politicians and simply wouldn't allow you to fix it. Until you deal with severe wealth accumulation, nothing else matters and yes it is actionable. The French lopped off a few heads, it worked.
And without all that wealth accumulation, the financial markets wouldn't be rigged. They were rigged by the wealthy buying politicians to get the laws they like passed. The markets are a symptom of the problem, they aren't the problem itself; accumulated wealth is the problem.