Social connectivity for amateurs and fast transfer of images to editors for professionals (using Nikon D4/D5 Canon EOS-1DX) won't work for real until the manufacturers pot SIM cards in the cameras. Stuff like the the Nikon WT-6/7 should feature multiple SIM slots. Don't say it can't be done, because this is already standard features for broadcasters using it for live video transfers of "breaking" news. E.g. Norwegian broadcaster NRK does this (multiple SIMs again). Thom Hogan mentions similar uses for broadcasting and pro video in one of his recent articles. The first brand to offer still cameras with SIM card slots will have an instant hit. This is a chance up for grabs! Nikon, Canon, Sony, Fujifilm, Panasonic? Apple, Huawei, Samsung are already there, by default.
Canon introduces USM motors in their AF lenses 30 years ago as well as electromagnetic diphragm. This enabled them to make a standardized fully electronic lens mount 30 years ago. I think this one major reason for Canon's almost perpetual success. What has Nikon done in the same time span? Non-D, D, G, P, E and AF, AF-I, AF-S and now AF-P, all of which creates another hurdle for the customers, in making the Nikon F mount less standardized than the Canon EOS mount. In the long run, I think, this matters more than who's the leader on sensor tech right now. I remember when Canon offered the coveted "full frame" and the others didn't.