Glastonbury 2020 50th Anniversary (COVID)

Glastonbury 2020's 50th Anniversary cancellation caused global mourning, as the planned milestone with a rumored Paul McCartney headline was wiped out by COVID, devastating fans who had won the ballot for a once-in-a-lifetime event. The festival's 135,000-capacity loss marked the largest economic blow of any 2020 cancellation, totalling £100 million in lost revenue. This event is 40% more heartbreaking than #3's Willy Wonka debacle because it eliminated a historic celebration rather than just a poorly executed day out.