I don’t disagree with your general idea, that companies will ban customers if they aren’t profitable. But these seem like sort of different examples… > All-you

I don’t disagree with your general idea, that companies will ban customers if they aren’t profitable. But these seem like sort of different examples… > All-you-can-eat restaurants will ban customers who eat/take absurd amounts of food, which is unprofitable. I like this example. It is simply not wanting to make a deal with the person. It seems pretty close to the betting situation. > Landlords don't rent to prospective tenants who have a history of not paying rent, which is unprofitable. This is different because the renter is specifically reneging on their side of the contract. It isn’t a matter of not wanting to do business with them because the deal has bad terms, but because the landlord has good reason to suspect they’ll actually be ripped off instead. > Every major retailer will ban you if you return too many items too often, which is unprofitable. This… I dunno. Making too many returns is not necessarily illegitimate or anything (somebody could just get unlucky and end up with a lot of bad products). But, it is a bad vibe, it feels like maybe the person is running some kind of scam or fraud that you just haven’t worked out the details of. —— Another example we could add: if you have a some pickup or beer-league sports and for some reason a professional player shows up, and starts playing really competitively and flattening all the other players, you might ask them to not come back, simply to maintain a reasonable competitive landscape for everybody.