...proprietary technology...sustainable? In 2 years?
Tesla offered its much faster and much cheaper charging protocol to the Auto Industry prior to implementation but the industry refused. Thus, it has been branded as "proprietary."
To solve that inaccessibility problem of "proprietary," Tesla then opened up its patents.
You can copy it for free. The Chinese can copy it for free.
It is no longer a closed secrete. No body will be prosecuted for copying Tesla Supercharger technology.
If you refuse to spend your own money to copy it, you can share its already built stations paid by Tesla with some conditions:
1) You share the cost of those stations.
2) You shall not impose your customers to pay per use.
With its model, Tesla owners have been enjoying driving from coast-to-coast since January 2014.
Its owners have now enjoyed that even more driving from LAX to NYC with auto pilot in 57 hours and 48 minutes including charging last year.
The network has opened up worldwide. You can now can travel from the very north in Europe, Setermoen-Norway, all the way down to Tarragona-Spain, Arezzo-Italy, France and all the way to the west over the ocean to Edinburgh Airport-UK or all the way east to Zvolen-Slovakia.
The same with rapid expansions in Asia and Australia.
And that's only in a few years.
If you are in doubt of its survival, go to its website and take a look at its Tesla Charger progress map.
Other protocols are nice talk but they are nothing but confusions and with absolutely no progress map.
Does the ICE industry even know what they are doing when it comes to charging advancement?
Refusal to embrace the betterment of society is a choice, not an excuse.