It's not even just the US, that just happens to be where most of these companies register their copyrights, and therefore, where the "infringement" occurs.
Many Western countries subscribe to some form of "contributory infringement" law, where someone can be fined tens of thousands per-work-infringed for simply developing or distributing a tool that can be used by someone else to infringe copyright. It's absurd.
While I completely agree with the general hacker consensus that you should be able to do whatever you want with your hardware, up to and including buying and selling mod services, I cannot for the life of me understand this guy's thinking.
He's running a business modding people's devices, Nintendo catches on and sends him a cease and desist, and so he stops. Congrats, you have narrowly avoided certain financial ruin, and made a bit of cash in the process!
All forms of business and economic-self-preservation logic would tell this guy to continue ceasing and desisting, but he opens the shop back up shortly after and Nintendo, as they are known to do, sues his ass off.
What exactly did he think was going to happen here?
Many Western countries subscribe to some form of "contributory infringement" law, where someone can be fined tens of thousands per-work-infringed for simply developing or distributing a tool that can be used by someone else to infringe copyright. It's absurd.