The distance between Simone and #2 is roughly the same distance between #2 and #10. Like there are 4-5 squads that could sub any player out for Biles and they would likely win the gold.

If she can train for 4 years without any significant injuries, I bet she wins again pretty easily. The question will be whether she wants to spend yet another 4 years working on gymnastics when she's already spend the last 16 or so of her 27 years of life dedicated to gymnastics.