Hmmm
Going to deliberately ignore how I said outside of New York or LA before that? Boston, Indiana, Dallas, and Minnesota weren't built through free agency. Neither was Denver last year. There were the Heatles, who would be an exception but that's a rare exception where 3 players joined up and chose to take a little less to win together. The league has created rules to try to avoid that situation again with with designated player rules where players can re-sign with their own team for more money, making it harder to pass up, and they've created harsher luxury tax penalties.
Golden State doesn't qualify since they won before KD signed there. Toronto didn't make their title team through free agency and Milwaukee didn't either. So what are you getting at? One exception over a decade ago? We aren't the destination Miami is. Banking on being the next Miami super team isn't a good bet, IMO.