Some people can get cash secured CC if they keep a certain balance at a chequing account at the card issuer's bank. Some people straight up won't get a CC from traditional lenders. I duno, is there a subprime CC lender out there?
In either case, those cards don't have rewards. For sure.
You missed the point though. Reward card owners reap more benefits than cash payers or CC without rewards. The price of goods/services is the same for all. The poor is subsidizing the rich with their reward cards. The end.
Your CC at university. What year was this? Pre financial crisis I assume? Also, what were the rewards? Bet you didn't get 2-3% cash back.
Doesn't matter. I got compensated for the merchant fee by being able to use credit cards at the merchants who passed on the fees in the price. Yes reward card holders do get better compensations but getting a credit card is still better than paying cash because you are NOT paying extra for the merchant fee for nothing. I will illustrate what I mean:
Let's say the price of an apple in this grocery store is $1. Without the merchant fee of 5% that the credit card issuer charges to the store, the price would've been 1 * (1-0.05) = $ 0.95 but because the store owner wants to pass onto the shoppers the merchant fee that he/she got charged, so he/she charges $1 for the apple.
If you pay cash: You pay the full $1 subsidizing the store owner for the merchant fee but without using the credit card. Because for you, since you are not using the credit card and using cash, the price is supposed to be $0.95 for you because that was the price of the apple when the store owner didn't offer credit cards and didn't have to pay merchant fees to credit card issuers. But now you are forced to pay $1 because that's the price, so as a result, you just lost (1 - 0.95) = $ 0.05 and still didn't enjoy the convenience of using the credit card, the delayed payment, the time value of the money and etc.
If you pay by credit card with no feature: You pay the $1 but you got to use the credit card and enjoy all the benefits of not having to pay right away, having extra funds to invest and etc. so for you with the credit card with no feature, you lose or gain $ 0 (1 - 1) = $0 You paid that extra $0.05 for exactly the convenience of using the credit card.
If you have a credit card with good features of let's say 2% cash back: Then on top of you getting compensated for the merchant fee, you actually earn extra 2%. So in terms of merchant fee, you still pay $0 (1 - 1) = $0. It's just on top of that, you get 2% cash back.
But in terms of merchant fee, the users of the credit card with no features and the ones with the cash back feature BOTH got compensated the SAME. The user who got to have the higher reward credit card got it all on their own merit, NOT at the expense of the no-feature credit card holder thus not subsidized by the no-feature credit card holders. In other words, if the no-feature credit card holders do not exist, the credit card holder would've still gotten the card with the rewards because the credit card issuer would've still wanted to offer it to him/her. MANY of those reward cards with the high rewards carry an annual fee; those credit card holders actually have to pay extra to enjoy those rewards. So WHERE is the subsidy?
Your question was regarding the merchant fee and in that aspect, ALL credit card holders are equal. The features or rewards on credit cards is basically a result of supply and demand just like everything else has nothing to do with subsidy. The only people who are subsidizing are the ones who are paying cash (because they actually listened to and got coached by those credit card-hating financial advisors); they are the ones who are subsidizing the store owners for the merchant fee.