I like PoS MUCH more then PoW without a doubt. Of course it's a good idea to buy ASICs and figurally "print money", but from the other hand, you are investing in hardware and power, doing nothing usefull. With PoS, you can use your investment in coins to generate an extra profit. I realy like this idea.
But, your example is "little" unfair. In first situation, rich guy is "parasite" just spending his money, but in second he is ASICs manufacturer, that is I believe is not the easiest business and I am sure that at least 99% of bitcoin holders would not be able to effectively control such enterprise. So you are compairing, let's say CryptoRockefeller's grandson spending millions on drugs, drinks and girls to a CryptoRockefeller himself)
This is why I also included an example of the richest guy's neighbor, who is a "parasite":
Obviously, the richest person in this example is also industrious, because he set up an ASIC manufacturing business, but this is an opportunity that is only afforded to the rich. Lets say his neighbor, who is not quite as rich, and not as industrious, simply bought 800 ASIC miners from him at a 40% discount rate from full retail, and then sat back and did nothing all year except to be a "parasite to society and offer NOTHING back". Well, he is still receiving a MUCH higher ROI than the poorest person who could only afford one miner at full retail.