When you buy from a commercial seller, you’re entering into an agreement. You agree to pay them, they agree to give you profiles under certain conditions. If you read these conditions, you’ll see that doing the kind of things you’re describing would break those conditions and you’ve then broken a legal contract.
Your first argument is that they ‘stole it’ in the first place by profiling an amp. They’ve stolen nothing - they’ve created a snapshot of a physical thing in the digital world using their skill / cabinets / preamps / ears. They’re selling you their ability at doing that very well with an amp you may not have access to. That’s what you’re buying...... if you still believe this is stealing, your only course of action is to not buy these stolen goods.....
Your next argument of ‘who would know’. If I go into a small shop with no cameras and steal something off the shelf when the sole owner is out the back.... also no-one would know. It is still wrong / still a crime. It’s true that the majority of crimes / wrongdoings in our world go undetected. Society works by having a set of rules that are enforceable when you get caught but largely it works because people do the right thing. Either because they’re scared of getting caught or because they realise that ‘doing the right thing’ is worthy.
Would suggest you ‘do the right thing’ here.