Banks foreclose on people who don't pay their mortgages. Shen you find a bank that hasn't ever foreclosed on any of the mortgages it has granted, please let us know.
Since your ignorance on business, as most other things, knows no bounds, let me explain it for you. I'll use words of one syllable, where possible, so that you have some tiny minimal chance of understanding.
There's lending, and then there's "predatory lending". Predatory lenders hope that the loans they make will go bad, because they'll make MORE money from the bad loans than the good ones.
Good lenders make sound loans which they hope will be repaid in an orderly way. Predatory lenders make loans they hope will go bad and that they can foreclose on the mortgage. When a lender forecloses on a mortgage, they get ownership of the house. So if you owe a lot less than the house is worth, the lender gets to keep any money it gets for your property.
If I own a house worth $200,000.00, and it's mortgaged for $100,000, my bank can make more money if I don't pay my mortgage than if I do. If I default, they can foreclose on my house, and sell it. Even if they have costs of $20,000 to foreclose and sell it, if they sell the house for $150,000, they pocket $30,000 in additional profit. Much better than the 3 or 4% per year they'll collect off my mortgage.
The accusation is that this bank refused to allow borrowers to re-finance, lost their paperwork, and blocked them to the point that people either gave up in frustration and walked away, or found their balances increasing at ridiculous rates so they had no hope of getting out from under.
I've seen predatory lenders insert clauses like a $250. charge for each NSF cheque or missed payment. $150 for "property inspections". The banker drives by the property to see if it's still occupied and not falling down = $150 added to your mortgage. If the banker does a property inspection once a week - $750.00 a month gets added to your mortgage. I've seen predatory lenders add $10,000 to the balance owing on lender's phony charges. Want a statement of how much you owe - $300 statement charge. Some mortgages have 3 pages of additional fees and charges in the event of default.
People sign these mortgages because they never think they'll default, and then they lose their job, or their tenant can't pay, or some little unexpected thing, and they get caught in an ever increasing spiral of debt. Or their situation deteriorates so that their only hope is to sign on to one of these deals, and hope to God they can hang on.
I done work for predatory lenders and I have little regard or respect for them. I've seen how they prey on the vulnerable, how they hope for the loans to go bad. How they layer on additional fees and charges for these loans - "administration fees", "brokerage fees", "advance fees" "legal fees". If your mortgage is $40,000. you'll be lucky if you get $30,000 of that money. The rest goes to "fees", half of which goes right back to the lender.
You're just too gullible or inexperienced to realize that shit like this goes on every single day.