Similarly, the "whales" in a casino get lots of "free" benefits, but only because they're losing a lot of money gambling. They paid for them.
Contrast with frequent-flier miles where businesses pay for plane tickets but the points go to individuals. That's pretty clearly siphoning off business expenses.
You are spending money, but you are spending far less money than the poor spend when paying for exactly the same products or services.
If I want to buy a few server CPUs or a few server computers or a few "datacenter" GPUs, I have to pay at least 2 or 3 times more than billionaires pay for them.
The same if I want to buy any other kinds of components that can be used to build things, e.g. power MOSFET transistors.
There is no "economy of scale" here, because those products are already fabricated in the high volumes that reduce their production costs.
For shipping, the costs are typically the same, regardless if the recipient is a big company or a small company or an individual, so they do not justify the price differences.
Even when the handling and shipping costs were bigger for small quantities, a small business or an individual could just pay the difference in handling and shipping prices, but that does not happen in reality, when the discounts given to the rich are many times higher than the shipping costs.
This policy of huge discounts is one of the main causes why all the markets end up in being dominated by monopolies or quasi-monopolies, because it is impossible for new entrants to compete with the incumbents, who pay much less than them for everything. Thus the biggest companies end up selling mostly between themselves, excluding any others.
one cash, one credit?
the credit payer is clearly paying less, with the difference paid by increased prices overall. That is the cash purchaser paying the credit one
Similarly, we do not say that October shoppers transfer wealth to Black Friday shoppers, even though the only tangible difference from your scenario is an irrelevant temporal one.
It tries to argue that higher reward rates are necessary to attrach customers that pay a lot (for credit card companies) and that lower income people are generally subsidized by taxes (obvious but unrelated), but at no point (until where I read) it seems to address the issue of merchants having to generally increase prices due to these cards.
Pretty flimsy argument to begin with. Because the rich then argue to lower their taxes and/or simply not pay them and the whole system falls apart. Not to mention that lower income people paying more to keep afloat debt than taxes (which at worst is a much better interest deal for an installment plan) is a much worse model for society.
What that article explains, is that the system of credit card fees and rewards that is used in USA is extraordinarily complicated, variable and obfuscated in comparison with other countries, so it is extremely difficult to discover who gains most and who loses most.
So the conclusion is more like "there is insufficient evidence because we cannot access all the required financial information" for the claims of the other article and the refutation itself presents no evidence that the claims of wealth redistribution are incorrect.
Are you saying it is intentional? Is it not more simply explained as simple greed by two companies colluding to keep competitors out of their market?
Pix, UPI, and a few more
Do you mean a higher corporate tax paid by companies like VISA and Mastercard?
Either way, the solution is already on the horizon: Digital Euro.