Every data gets even paid twice. The sender has an internet service contract and pays, the receiver does as well.
You opening some Lemmy post and requesting data, has the server owner pay via his hoster contract and you pay for the same data packet via your ISP monthly fee.
Now they are asking for a 3rd payment (once again). Why even stop at 3? Just ask for 4 or 5 payments and then meet in the middle at 3.