It’s the simple questions in life that mean the most-

“Do you want dessert?”

“Why are we here?”

“Is your mom always like that?”

“What’s the ultimate question of Life, The Universe, and Everything?”

“Why?”

So, here, Hubris asks a question that Peter should have considered before now.  “Why?”  Do we know Why Peter wants to have a huge chain of stores?  For fame? For money? For fulfilling a sense of importance and destiny that life has heretofore failed to provide? And Mal.  Why does Mal care about this?  Maybe ’cause he knows he’ll be needing a job pretty dang soon.  Maybe ’cause Peter has more of an alpha personality than Mal can handle and he’ll wise up later. And Hubris?  He probably knows Why Not, but maybe not Why.