You find one of the few examples that worked and worked only because of covid. How many times have teams tried this failed and ended up in a much worse situation. Brooklyn, Phoenix, Houston, clippers.
You look at the good teams that are not leverged and have been close several times even if not winning. Miwaukee, Denver, Phily, Boston, GS.
You look at teams that have won multiple Spurs, lakers, GS. These for the most part have been built teams not trading for stars. So yes I would rather build the team then go all in trying to win for 1 year.
The disgruntled star does not all of a sudden become a happy player. Look at how many times Labron, KD, KI, CP3, Paul George have moved throughout their careers. They are happy for a some time but eventually become unhappy and want what they want. Build a team together and let them grow together. That is how you win multile championships. Just like I see so many people wanting named players not good players.