The management at Mozilla is about to do what I predicted a while back: They'll pivot to become an advertising company. Firefox is no longer the main product, it exists only to support the emerging ad business.
Then again, we pay interest to credit card companies who regularly sell our data, so ¯\_(ツ)_/¯
(Sole exception given to spend done out of duress, that balance should be paid ASAP but you may be excused because something had to give.)
Credit cards are predatory toward low-income individuals on purpose. When my vehicle needed $3000USD in repairs a few years ago, I did not have that money just laying around, so it went on the credit card. It would have taken me one month to pay that off if I did not also need to pay a mortgage, utility bills, student loans, groceries, and medical bills, on top of minor daily expenses people like you seem to forget exists when they want to punch down at someone less fortunate than them. When you already have nearly every dollar you make ear-marked, that "6 months interest free" crap might as well be a fart in the wind.
So, cc's are doing exactly what they are supposed to do; keep us in a position of minimum payments because emergency high-dollar expenses will, inevitably, happen if you are a living human not fortunate enough to have been birthed in a higher tax bracket.
If you are paying interest on credit cards, that means either of two things:
A) You're one of the unluckiest men in the world having one shit thrown at you after another. I sympathize and hope you can get that balance paid off soon.
B) You're terrible with money and can't budget nor save to save your own life. I don't sympathize, but I will encourage you to learn how to budget and grow the necessary maturity to cut down expenses you don't truly need and can't afford.
Also, banks hate credit card holders carrying balances. Banks make their money off merchant and transaction fees, not interest payments; they very much prefer card holders who pay their statement balance in full every time.
What I mean is making money off of interest is not their first choice. Interest money is not guaranteed, there is no collateral securing that debt. If the debtor (card holder) can't or doesn't pay up, the bank lost that money.
Banks prefer making money off of fees which are guaranteed revenue, and they strongly incentivize card holders to not carry balances over by waiving interest if statement balances are paid in full every time.