The logical fallacy comes from the implicit nature of it being your cup rather than a shared cup. This is more like "if the park is crowded and a big family dec

The logical fallacy comes from the implicit nature of it being your cup rather than a shared cup. This is more like "if the park is crowded and a big family decided to celebrate their birthday there crowding it even more, who do you blame for the crowd?" Or "If you've got four bicycle stands and four of you bike to work but then a new guy joins and he bikes to work too". Of course you can still apportion blame/responsibility based on idle time, personal v commercial use, but who came first is less convincing when equal rights apply.