I've run into way too many people like this to count. Fortunately, they're easy to spot and I'm sure someone has even created a taxonomy.
All of them, without exception, have already launched or plan to launch a token on Ethereum. That's red flag #1.
Ask them why their product/service needs a token. 9/10 can't even answer the question. Red flag #2.
The few who can mutter something about decoupling the value of their utility token from ether. You may be able to have an interesting conversation from there, but it's more likely the answer is nothing more than a highbrow version of "because money is flowing through the rivers and we aim to grab some of it." Red flag #3.