It's cute that you think you provided data that proved something...
It's cute that you're too lazy to actually think about it and no how obvious it is. But fine. Teams in cap leagues with Championship droughts of more than 30 years.
NFL: Cardinals, Lions, Vikings, Titans, Chargers, Browns, Falcons, Bengals, Texans, Bears, Commanders, Raiders, Dolphins, Jaguars, Bills, Jets, 49ers, Panthers
NHL: Leafs, Canucks, Sabres, Flyers, Coyotes, Islanders, Flames, Oilers, Sharks, Senators, Panthers, Canadiens
NBA: Kings, Suns, Clippers, Hawks, Knicks, Jazz, Pacers, Nets, Blazers, Wizards, Thunder, 76ers, Hortnets, Magic, Timberwolves
That's basically half of all teams, and it's not even counting droughts for teams like the Chiefs who went 50 years between Super Bowls. The idea that a 30-year drought is something atypical is total nonsense. Expectations to be better than that lack context and are based on the success of the 70s and 90s - an era of the NFL that does not exist or have any comparables in pro sports.