WIN-win

WE OFTEN SAY IT'S A WIN-WIN RELATIONSHIP...

WIN-WIN where buyers and sellers are equal
WIN-WIN where sellers are more dominant
WIN-WIN where buyers are more dominant

If we consider that the WIN on the downstream side, the buyer's side, is greater, and the WIN on the upstream side, the seller's side, is greater, as a natural flow, then WIN-WIN makes sense.

Therefore, if the buyer's WIN is made larger, the seller's WIN will naturally become larger as well.

We will do everything we can to make the WIN of the buyer greater.
No business where the WIN of the buyer does not exist.

I'm going to keep it simple and go with this.