The lesson
Name your toughest competitor as something the buyer can feel, like a season, and the rival list stops being the story.
A deck rebuilt by Pitch Unfairly from a 1978 business plan. The competition slide is headed "Our toughest competitor isn't another shop. It's January." A tilted calendar card reads "Walk-ins: brrr", and three plain lines sit beside it: supermarket half-gallons, other desserts downtown, doing nothing.
Don't copy the ice cream jokes or the retro palette. Keep the pattern: one honest, unglamorous obstacle named in the headline, with a single picture beside it.