Credit card companies could in fact be the next generation of bussinesses to use people as slaves. paid slaves but only paid enough to stay just in debt.

Look what the coal mineing industry did, it housed hundreds of people in small towns. controlling their work hours and rate of pay. Also controlling the cost of liveing in the town, which was very simple to even it out so no money if any was left for the families after paying the company for their way.

I am in no way saying this is the next step mind you but it wouldnt be a far leap.