By my count, during the 33 years that I've followed the NBA, the best players on a championship by position are as follows:
Point guard: 6 (Johnson 3, Thomas 2, Billups 1)
Shooting Guard: 8 (Jordan 6, Bryant 2, Wade 1)
Small forward: 6 (Bird 3, Erving 1, James 2)
Power Forward: 6 (Duncan 4, Garnett 1, Nowitzki 1)
Center: 6 ('Neal 3, Olajuwon 2, Jabbar 1)
That doesn't exactly tell me you can't build a champion around a point guard.
Remove Kobe and Wade, and add those tallies to Shaq -- he's not there, those guys are golfing by the conference finals. What you basically have left is arguably the two best players of all time.
That this argument persists on this blog insults the collective intelligence of the group, IMO. Objectively, it's crystal clear that building around ANY guard significantly reduces the likelihood of winning in the NBA.
That this argument persists on this blog insults the collective intelligence of the group, but not for the reason you think. It's a "can't see the forest for the trees" type of argument to begin with. The position of the player is immaterial, it's the caliber of the player that matters.
You don't build those teams around centers or small forwards or point guards, you build them around dominant, transcendent players. Having Magic or MJ doesn't make you less likely to win titles than having Shaq or Duncan because Magic and MJ are guards. Likewise, building a team around Chris Bosh doesn't make you more likely to win a title than building a team around Deron Williams just because he's a big and not a guard. But building around Bird makes you more likely to win a title than either of them. Not because of the position he plays, but because he's a vastly superior player to either of them.
It's entirely homer to believe that Ainge intends to "build around" Rondo, and it has nothing to do with whether Rondo's the 5th best PG or the 7th best PG or the 40th best PG. It's not a worldly POV.
Hopefully we can keep Rondo, and find our franchise player another way. But Ainge shops Rondo because he recognizes he must consider all options in finding that long-term cornerstone.
Ainge intends to build a contending team. He's not trying to build it around any particular player and he's said so many times. If he does build a title winner then people on the internet will claim that the team was built around player A or player B when neither is the case.
Rondo's already shown the ability to be a dominant player in the playoffs. If we get another such player we'll be in good shape, and will give us a solid shot at contending without the type of player on that list. Which is great, because the odds of getting such a player are slim at best. A number of teams in the league (including many that spend much of their time in the lottery) have *never* had such a player in their history.