This obviously had to be done before the Model 3 hits the streets. Looks to me like they did it just right and fair to everyone involved. It's also a good opportunity for businesses to offer free Tesla charging to draw in customers, like my favorite B&B near Hershey, PA. Right now there's a Supercharger on the highway not too far away, but if you had to pay vs. stopping for the night and staying at the Inn, it creates that added incentive.
I think that will be the eventual snowball effect for broad charging infrastructure, when there are enough people out their prowling around for where to grab a fast charge that businesses of all sizes really take notice. I'm surprised more businesses haven't geared up for this already, particularly shopping malls, restaurant chains, etc. When it eventually happens, Volt and ELR owners will be at a disadvantage due to the lousy 3.3 - 3.6 KW limit for charging. But hey, there's always gasoline-- at least that's GM's attitude.