Those who "hoard" wealth do not do so by filling a swimming pool with gold coins like Scrooge McDuck. They invest in companies that provide jobs and the goods and services that the rest of us enjoy. Yes that is virtuous.
I like Milton Friedman too, he had a cool show on PBS, but history isn't going to be good for that guy.
If you are saying an excess supply of credit leads to financial crises, I agree with you. But the federal reserve that intentionally pumps money into the big banks to make credit easy is a far bigger contributor.
I agree that Milton Friedman had his flaws, one of which is this very topic, he never properly connected the federal reserve, money expansion and easy credit to economic instability.
They invest in companies and expect a return! If money was directly redistributed, then the people running and working for those companies might able to keep that value that they have created.
When government provides a service that people don't want, that service can continue indefinitely, especially if the few who benefit can contribute back to the politicians who keep it going. Lockheed Martin and Boeing can contribute to some politicians to make sure that wars continue and they reap back way more than they contributed from the taxpayer who's only option is to vote between two pro-war candidates. Those jobs making bombs for Saudi Arabia to drop on Yemen don't contribute to society, they are a determent to society, yet they continue without end because nobody loses on that investment as long as the taxpayer can be forced to pay for it.