To me Jiroshiro is only interested in money. Every time he had opened his mouth so far, it has been money related. Is the first student to talk in the series, and he was already talking about money
. And in this episode, her own girlfriend was talking about what they will going to do about Horizon, and he was not interested at all... until she mentioned kindly he could make some profit out of it. The food related talk was only a chance to joke about lolicon guy.
They will forget completly about this topic next episodes
It was all to show they need Masazumi on their side in the end to me.