[OSM-talk] mapboox improve the (proprietary database used as en overlay) map

[Marc_marc]

Hello,

following a discussion on the mailing list talk-fr,
mapbox "improve the map" now feeds their proprietary database,
the one that is displayed on top of the osm

is it acceptable in terms of licensing to render using odbl+proprietary 
data?

ethically it's obviously very bad to appropriate user contributions
in this way, does anyone have a contact at their end to try and get
them to return to more ethical behaviour?
on talk-fr, no one from mapbox has replied since this behaviour
was pointed out

Regards,
Marc