Nah. Rock/Austin needed to headline WM 17 and it's still the GOAT WM main event. HHH/Austin did need a real blow off though. I assume eventually the Power Trip would have ended with the two of them splitting up and headlining Summerslam or Survivor Series. HHH's injury really changed everything for 2001. Alliance angle would have been way different, Austin probably wouldn't have gone comedy, probably wouldn't have had Jericho vs Rock, Angle vs Austin, and so on.
Wish we could have gotten a triple threat match between HHH/Rock/Austin in 2001.