It's unrealistic to think that the Suns can compete for a title within the next ten years, barring a miracle in the draft lottery. There are 30 franchises that all have their eyes on the prize, and it's fairly obvious that the Suns' fundamentals, in terms of talent and other resources, are well below average at this point. Sarver's opportunity to win a title as Suns owner has come and gone. If he fails from this point forward, that in itself is not a knock against him.
The Suns came into the league in 1967. Since then, they have made 9 appearances in the Western Conference Finals. The only two franchises with more WCF appearances during that span are the Lakers and Spurs. The Suns haven't won a title, but they have been remarkably successful by any other measure. We'll find ourselves wishing for the "good old days" soon enough.