Well, they really are hoarding as much money as possible, rewriting as many laws as they can to help themselves do it. And with rich people like Peter Thiel making comments about wanting to use blood from young people the eating babies part is getting closer.
Blood is a renewable resource so I see no problem in making it a market product, with the proper regulation in place of course.
As for hoarding money you are misunderstanding how things work. Money hoarded are usually reinvested somewhere else and does not sleep in a vault or something. Even your bank is constantly investing the money you save on the market. Thats how you can finance companies and startups in the end.
The rich are keeping that money in their own circles, thus only funding the things they themselves care about. They are big time tax dodgers, because they don't want to accidentally fund something that benefits the poor.
> they don't want to accidentally fund something that benefits the poor.
Welfare policies have been shown at multiple times to actually harm the poor in the long run, not benefit them. There are entire books written on that topic. Check out Losing Ground: American Social Policy, 1950-1980 from Charles Murray.
There have been tests done which show an inverse correlation between the cost of a person's car and how likely they are to stop for pedestrians waiting at marked crossings. Just as an informal example.
It is also extremely telling that the people who litter the most are young and rich.
Rich people overwhelmingly care a lot less about people they consider to be beneath them.
It's a product that's there's already a large, regulated market for, in fact (as blood plasma specifically). It wouldn't much extra effort to only buy it from young desperate people...