What started the fall of these 5 teams?

spurs and the mavs are doing great, the suns did what the marlins did in 01, after winning the world series, the owner basically sold his team for money, the pistons made awful trades, they had a great bench in 04-07, but they had veterans who are now retired, their bench is now their starters, and currently they have no bench, the hornets aren't use to success, they fell under pressure with having the best record, they will soon get back on track