Hi, WillieWonka,
Admittedly, capitalism is not the only economic model to follow. But (and, I do not feel all that comfortable saying this…) neither Christ nor the Church gave us a specific economic model to follow. They did, however, give us principles to follow and, I think that is where the action is: justice first, and then charity.
I think the basic assumption is that Christ worked as an apprentice and then master carpenter when He took over his foster-father’s business. He worked at this skilled trade for an unknown amount of time and my assumption is that He sold items He made to customers for more then His direct, indirect or fixed and variable costs - He did have His widowed Mother to support. Now, I do not want to get too far afield here - because all of this is straight out of my head … but, my guess is that He worked hard, saved His money so that He could finance His Public Ministry and support His Mother. Now, I have nothing to back this up - really - but, ruling out a miracle to economicall support Himself and His Mother (which would not be seetting much of an example for us to follow) what else is left? Yes, there were several people who made contributions to the Public Ministry, and since Judas held the purse, there were those who obviously made donations… but, all of this is just guess work.
After the Resurrection, the Apostles lived in such a way that all things were held in common. I am guessing that this type of economic (as opposed to atheistic) communism can work for small groups but really can not be translated onto the national scene. The only other example I am aware of is of the Oneida Community in New York which was founded in 1848 and dissolved in 1881, had a communal way of sharing property and never had more then 500 members.
I am not entirely sure I am on the same page with everyone else here…

but, I think that money has value - and, from that stand point is no different from a horse and plow having value, or a loom having value, etc. One would borrow a person’s horse and plow so that their land can be made ready for farming - and that the crops that grow will be of value to the farmer. The horse needs to be fed and watered, the plow sharpened and requesting compensation (or rent) for their use seems both reasonable and just. How is it different with the ‘renting’ out of money?
The issue of usury, as I appreciate it, is the UNreasonable amount of rent charged (loan sharking) this was once defined in law making such activities illegal.
I really do not know where to go with this as a concept. Previous posts have complained about any interest being charged on a loan - but, this simply fails to acknowledge that the lender has sustained costs by lendig out his own money to another person. Admittedly, there could be a person who is just sitting around with money in a sock and lending it out to another at no interest would mean nothing to this person - but, this is not the usual experience. In the parable of the lazy servent, the Master, at a minimum, expected him to have earned interest on the funds rather then just bury this until it was time for the final accounting event.
After re-reading other posts… I am confused on where we really want to go with this. So, any guidance would be dearly appreciated.
God bless