The credit system as is massively contributes to wealth inequality in this country. You can't get credit without money, and you can't (easily) get more money at a reasonable interest rate without credit. Couple that with underreporting agencies like utility companies, and landlords, it really only benefits the middle class (and then only if they are upwardly mobile).
Removal of the credit system won't help either. Assuming no one was able to borrow or ask others to borrow (since it would probably just bring back the current system eventually), the rich would still be rich and the poor would still be poor except the poor and middle class would have no way to raise capital at all for a venture that could propel them.
Why should someone whom is asking for money with no way to pay it back get the same preference as someone asking to borrow money who has a history of solid payments and has enough capital they could liquify to pay off at least 50% of the amount tomorrow?
I don't think that utility companies or landlords under report although I understand that it would be nice if they reported more for beginning creditors. The distinction for why they aren't included is that they aren't lending you money. You are only paying for their services as you use them. Once in default, they are effectively loaning to you at that point though with a balance to be paid. Do you think the IT technician whom invoiced you for $2500 in work should also report as well? [shrugs] Guess I don't want all balanced from whom provided me a service to be in a credit report for 7 years but I understand that is just me.
The point I'm really getting at here, when I say underreporting, is that I would make a guess that those who have good rental and utility payment history would also be safer bets for credit than those who do not.
That's not a net positive to society in my eyes.