Principle: Any person or business knowingly aiding someone's infringement on a copyright is also guilty of copyright infringement.
Principle
If you knowingly aid then you are also someone's infringement → guilty of copyright on copyright infringement
Conclusion
Grandview is guilty of copyright infringement
Evidence
A customer used the kiosk to infringe on the copyright of a wedding photographer.
Evaluate
On Strengthen Application-of-Principle, the conclusion of the application always matches the right side of the principle. But the evidence always fails to fully establish the left side of the principle.
In order to trigger this principle and use it to derive that GDS is guilty of copyright infringement, we need to know that GDS was knowingly aiding someone's infringement on a copyright.
All we know is that some customer used a (self-service) kiosk to infringe on a copyright.
Goal
Let's look for an answer that establishes that GDS was knowingly aiding someone's infringement on a copyright. Maybe they helped the customer use that kiosk and saw that they were infringing on a wedding photographer's copyright.
Maybe they know that people use that machine all the time to copy copyrighted material without permission.
However the answer does it, it needs to establish that GDS "knowingly aided someone's infringement".