For me, a dominant player is worth restructuring your roster for because they are so head and shoulders better than the next best.
That is your definition.
No one during that time was thinking Robinson had massive separation with Olajuwon, Ewing, Shaq, etc... that doesn't mean anyone was thinking he had a massive advantage over other top tier centers he overlapped with in this peak.
Over a long 7 year stretch - and among 30 teams and 130+ different Cs - just one C, DRob, among all Cs was 1st in points scored, 1st in FTM/FTA, 1st in rebounds, 1st in assists, 1st in blocks, 2nd in steals.
Don't know how any one player could be more dominant statistically at a single position over that long of a time span (looking at the past 4 decades).
By dominant, also I specifically mean biggest contribution to winning. Not necessarily on the best team but the one who makes the biggest difference between being a winning team and a losing team
Those 7 seasons DRob's best teammate was likely Sean Elliot. Terry Cummings played 6 of those seasons but only 29 min/g (he did have Dennis Rodman 2 of those seasons, at 64 games/season).
Its obviously Jordan and it isn't even close
The Bulls 6 title seasons among the league's SGs Jordan was 1st in points scored, 1st in FTM/FTA, 1st in rebounds, 1st in steals, 1st in blocks, 2nd in assists.
He had Pippen each season at an average of 38 min/g and 75 games, had either Rodman (66 games/season) or Horace Grant (75 games/season) at PF for 35 min/g for 3/6 of the seasons.
Probably give Shaq the 2nd place nod. 3-peating aint easy as lead dog. Very rarely done.
During his 3peat among Cs Shaq ranked 1st in points scored, 1st in FTM/FTA, 1st in assists, 2nd in rebounds, 3rd in blocks, 18th in steals.
Had Kobe Bryant for 71 games/season and 39 min/g.