The rule back then was non-existent. You had guys like Dominique Wilkins, George Gervin, Shawn Kemp, Moses. Malone, etc. who went straight to the NBA out of high school. Most players though went to college and played 3 years. Once Kobe went to the NBA instead of college the paradigm shifted and more players followed him.
That 88 team didn't have any players of the magnitude of those I listed above. Great team with superior athletes and a great scheme devised by a great coach.
It was hard, though, to not want to reach through the TV screen to slap Curry Kirkpatrick (former SI writer who was doing color for CBS that day), when he started harping on "running up the score." Truth be told, only one coach that I can remember (the guy at Georgia State) really made an issue of it that season.
People also conveniently forget that OU was picked third - in the Big 8 that season, in every magazine or poll that existed in the fall of '87. Missouri and Kansas were both heavy favorites to be near the top of the national polls before the season, not OU.
I don't think anyone could have conceived the notion of OU having the year they had. We had just lost THREE four-year starters in Tim McCallister, Choo Kennedy and Dave Johnson. And no one expected Stacey King to improve his scoring from 7 points a game to 21 (those numbers are rough guesses). Finally, no one expected Mookie Blaylock to be THAT good. He was the #2 overall JUCO player coming in (we had 4 of the top 8 with Andre Wiley, Mike Bell and Tyrone Jones). I think the #1 JUCO player was Boo Harvey who went to St. Johns...and he wasn't at Mookie's level, that's for sure.
As for the best team to not win a title...that has to go to UNLV in '91. However, 1988 OU, 1985 Georgetown and 1983 Houston are all in the conversation for #2.
'99 Duke, too.