The argument that OP may or may not have intended is that any change in Google Maps benefits a fraction of “everybody” that equal to Google Maps’ share of the m

The argument that OP may or may not have intended is that any change in Google Maps benefits a fraction of “everybody” that equal to Google Maps’ share of the market. That’s maybe 80-90%. Telling users of Google Maps that their contribution is worthless if they don’t submit it to a free & open database may be net-negative if only a small fraction gets discouraged from contributing altogether. I have a few million edits on wikidata to proof my sympathy for Open Data. But the openness is only useful if it leads to more people having access to the data. And a proprietary service being involved doesn’t diminish the value by itself.