This also could be a KO factor. Not everyone needs 30-40 or more payments methods. At the end, I would say, ~95% are not in use.
I would say 10 or 15, maybe 20 but not more, most important methods and all others as Add-On's. At Version 2.3.4.1 there are alone 23 methods of Moneybookers, today Skrill. Most of them are only for 1, 2 or 3 European countries. So why should a store e.g. in Singapore have all those methods in the box? I prefer a smaller and clearer , but faster system without to much overload.