I didn't say "massive taxation of the wealthy." I suggest 99% taxation at time of death, with a remnant of the wealth ($25 million free and clear) passed on to heirs. I suggested that there earners of the wealth would be able spend as much as they wish on whatever they wish -- giant yachts, airliners, etc., but wouldn't be able to pass it all on. It's the pernicious accumulation of great wealth over generations that is harmful; the generation that actually earns it is usually pretty useful.
I can't agree with you at all, John.
You are really deciding what an acceptable (to you) level of wealth might be from your personal perspective, and that is a flawed concept. Different people have different expectations, experiences, starting points and different obligations in life; as has been pointed out, even the number of children (let's not yet consider how the family tree spreads, branches out as it goes to grandchildren and beyond) will greatly affect the distribution and the value to each beneficiary.
I am personally very, very far from being rich, but life has made me close to some millionaires and yes, I have cruised the Med with them and all that kind of stuff. But don't imagine their life is all one of luxury and the dolce far niente. They work all the time to keep the act together, those many balls all up in the air; to keep on top of the ever-changing values and fortunes of their investments and businesses. Beyond those problems they have to contend with family and the many pretty sharks surrounding them and their sons, not to mention the hungry males doing the same to their daughters. Money does not come alone; it always has its own penalty and cost to everyone who gets it in any meanigful way. Even lottery winners find the same problems, and without the acquired skills to know how to cope.
There is no way that I can visualise it to be right to remove from anyone or their family the wealth they have earned honestly. I do not think that the concept of spreading it around by decree is the right way to go about it; that's just extortion by state. Enough that tax is paid as the money is earned. Why should the state then rob the corpses of those who were able to make money? It's disgusting tomb raiding and robbery, pure and simple.
If you want disincentive to the creation of enterprises, then taxation even beyond death is one sure way to go about crushing the human spirit of adventure. Better just to create the little corner shop and leave it at that.
Holding together companies is no easy business, and weakening them by removing capital does little to further the interests of those firms and simply puts both company and employees in danger. Vast wealth is not usually left sitting in banks, and where it is, even that money is put out to work by the banks; wealth is used to make more wealth, and that necessitates its circulation into and through other businesses and ventures and experiments, all of which include the employment of other people both highly skilled as well as at the lowest levels of ability.
Don't kill the golden goose, and do keep all spanners far from the works!