Earlier quoted context omitted.
How do peer reviews happen, then, if nobody gets paid to do them? Does research money (that goes to the production of the paper) not also cover peer-reviews? I wouldn't see any incentive for any work to be peer-reviewed, ever, then.
I'm a math professor, I can answer this. We tend to think of journals as being run by their editorial boards -- i.e., by scientists in our field. The publishers are in the background, not taking a very active role, simply skimming off truckloads of money in the process. In particular, peer-review requests tend to come from scientists whom we know at least by reputation, and often personally. When I spend serious time…
Paying per paper maybe not, so maybe paying per hour makes sense?