Earlier quoted context omitted.
https://en.wikipedia.org/wiki/Parable_of_the_broken_window There is zero economic gain from more complex tax rules. Further, the software does not absolve you of liability. At best they may agree to cover it, but that's unlikely and they can also go broke if they get it wrong.
States want to collect taxes. Now that they have a consistent policy position, you may see interstate agreements to harmonize collection. There is already a precedent with DMV data sharing agreements, and some states will collect sales taxes for others as well.
I'm having a hard time coming up with an example where this makes any sense. Can you elaborate?