The three exclusion patterns

Most strong exclusion lists pull from these three. Try to have one of each.

Pattern 1: An obvious competitor feature you refuse.

The closest competitor has feature X. You commit to never adding X. The refusal becomes your reason for existing. "Notion has nested databases; we don't, because our customer is the person who specifically does not want nested databases."

Pattern 2: A feature category that bloats every product over time.

Almost every product eventually grows social features. Or integrations. Or AI features. Or gamification. If you commit to NOT growing one of those categories, you stay focused while your competitors lose ten years to feature creep. "We will never add a marketplace." "We will never add achievement badges."

Pattern 3: A user-experience choice that decides who you're for.

If you commit to "no mobile app" or "no real-time collaboration," you're explicitly choosing your customer. Your customer is the person who doesn't need the thing you refused. That's a sharper customer than "everyone who might want either."