Prediction: Fortnite will become the highest grossing game of all time

https://plarium.com/en/blog/highest-grossing-video-games/

Fortnite is already the 5th highest grossing game of all time at 20 billion USD grossed.

Street fighter 2 is number 4 at 21 billion USD and its not like street fighter 2 is selling a lot in current year so fortnite is guaranteed to surpass them by next year.

Dungeon fighters online is at number 3 at 22 billion USD. Again fortnite would easily beat their gross by next year as fortnite is making more than 5 billion USD per year right now.

Pacman is at number 2 at 25 billion dollars which again would be easily beaten in two years.

Space invaders is at 30 billion USD, which would be guaranteed beaten by 2030.

The primary advantage fortnite has is that it is the most successful live service game out there, which gives it a far longer shelf life than any of the other games above it on the list.

Conclusion:

Fortnite will become and remain the highest grossing game of all time for a decade or three.