Zach Lavine is very much your 2nd option on any championship caliber team. DeMar is too. At best, DeMar/Lavine are comparable to Tatum/Brown, though most people would rather have Tatum/Brown than DeMar/Lavine.. plus DeMar is getting old. Short of Tatum really taking another leap, Boston is never going to win a championship with that team, a team clearly better rounded than the Bulls currently are.
And you're right.. 9/10 teams, the team with the top players win championships. More often than not, it's clear top 5 player in the NBA.
Obviously the Bulls probably aren't getting that any time soon, short of a disgruntled player coming onto the market who actively wants to be traded to Chicago. But, do we see that happening any time soon?
The draft is your typical way to acquire such superstars, but that can also be just a crapshoot. Of players I call superstars at the moment, their draft pick numbers are #1, #2, #3, #3, #7, #15, #15, #41 overall in their respective drafts. There is a #2 and #5 overall pick on the horizon of joining this list soon. The three players drafted #15 and #41 took multiple years of development to get to their current places.