They need regulations to standardize not only batteries but charge stations. Batteries should be interchangeable across brands and grade/capacity tiers.
This would be a horrendous idea unless you want every car to be of the exact same design. For the same reason we don't make laws that every combustion engine can be used in every car, we don't want this either.
Right so let’s have thousands of variations and none of them interchangeable. Great for the environment.
Now imagine if you can only fill up at an Exxon. Not because the fuel is different but because the pump nozzle size is different. Only a true libertarian capitalist would come up with such an idea.
I believe the parent was reacting to your suggestion to make batteries interchangeable, not to your suggestion to make all chargers compatible. I came away from your first comment with the idea that you were suggesting that I should be able to take the battery from a Leaf and transfer it to a Tesla and have it both fit in the car and function correctly, and I believe that's the notion that the parent was objecting to.