Will there ever be another Jeopardy! champion as great as Ken Jennings

[TorontoCFE]

There will be another long run - past champs could have done the same under the current rules.

The thing is, knowing the answers is not the hardest part - it is being quick to buzz in. Presumably, one would get better / in more of a grove as you play more games so if you are close to the challengers in skill level, then your extra practice will get you more opportunities to answer correctly and give you an edge to keepo winning.