Some use cases make such schemes difficult:
#1: Someone who buys a Tesla because they live in an apartment with no available overnight outlet, so they hope to charge daily at their local supercharger.
#2: A car hire service, like a limo service, or Uber driver.
Would Tesla want to discourage / prevent those types of customers?
Yes... and no. Discourage them from using superchargers but encourage them to buy a Tesla. I think Tesla would love for everyone - homeowners, apartment renters, Uber and Lyft drivers, standard yellow cab drivers, etc. to own and/or drive a Tesla. And imagine the impact on the environment by taking all those polluting ICE cars off the road!
But the dilemma is that allowing the above use cases without a significant (and perpetual) upgrade to the Supercharger network is setting current and future Tesla owners up for long lines at the Supercharger stations and setting Tesla up for ever-growing electricity charges. Any problem can be solved with planning, time, effort and (most importantly) money. So if there's a way that Tesla can collect enough money to really beef up the Supercharger network to accommodate all use cases, then great.
But Tesla has been very clear in their communications lately (the last couple of years at least) that Superchargers are intended for long distance travel. So I think there will be clarification about the terms of use of SCs. And hopefully Tesla can come up with some other solution for local charging and professional drivers. Something that is both fair and economically attractive. And it may require a partnership with some third parties to provide this other solution.
Their initiative to install
over a hundred HPWC chargers in Manhattan parking garages is one such solution. Apparently there are now more Tesla "charging stations" in Manhattan than there are gas stations. And that's a good start!
Musk did mention that they expect to not only double the number of superchargers worldwide but
quadruple the number of destination chargers by the end of 2017. Destination chargers make more sense for local charging. People rarely drive their car 24 hours a day and generally need somewhere to park. So if there were parking options in a city that allowed a Tesla owner to park overnight (or while at work) for a moderate price, and leave with your car topped off and ready to go, that would probably work for most apartment dwellers and professional drivers, right? Parking spots in NYC sell for anywhere from $125/month to $500/month (even higher in certain Manhattan neighborhoods). How much extra would one have to pay for a parking spot with a plug? $25/month? $50/month? Considering there would be no gas expenses, this may be easy to justify.
For a professional driver, they might be a bit limited by 215 miles of range a day (that's probably only about 5-6 hours of city driving), but they could get a larger battery option for the Model 3 and maybe get close to 300 miles of charging a day.
And Tesla could also partner with cab fleet owners to provide destination chargers (or Superchargers) to them at reduced cost as long as they pay the electricity and maintenance costs.
To me something like that would make more sense than allowing free unrestricted access to Superchargers for all owners, whether they're local or on the road.