For greater detail, see my responses at

https://news.ycombinator.com/item?id=35657217

and

https://news.ycombinator.com/item?id=35657036

I don't know specifically about Springer and Elsevier. From elsewhere in this thread, I learned that they expect the editors to do all the work recruiting reviewers and do it for free. I don't support that model. For publishers that assign internal staff that get paid a salary to help Editors recruit reviewers, it is far from unreasonable to spend $3K recruiting reviewers for 15 papers, even while the actual work of reviewing is unpaid.