Tesla is true to their Mission Statement. Most of the other high speed charging schemes are horrible. Saw this myself when attempting to charge up G/Fs BMW i3. Lots of broken private chargers, failures to communicate, cutting off before full, displays hard to read, only a coulple chargers per location, full chargers etc.
Only Tesla Superchargers are capable of meeting the expectations of the driving public. Simple plug and play with great app reporting. Customers can see from their displays where the best choices of location and availability in real time, on their displays. If areas are congested you can decide to stop earlier or slow down and stretch a bit to get a little further to a open stall. Predictive software is coming that will assist the driver in making an informed choice of where to stop along their selected route.
This will allow other manufacturers to free up money and talent to simply piggy back on Tesla's proven system.
One system for all will be far better than each manufacturer rolling out chargers for just their brand. Electrons are electrons. No need to brand specifically like current gas stations.