This has been a hot topic amongst basketball circles and not just between fans but also analysts and even NBA players. Many have stated, especially since Durant left the Thunder to play with the Warriors, that this will ruin the NBA; having the same team in the finals and and winning it is bad for the NBA.
On paper, this definitely sounds like a bad idea but once you look at the NBA's history, this is definitely not the case.
- From 1980-1989, between those 10 years, there were only 4 teams that won an NBA title during that decade. The Lakers won the championship 5 times, the Celtics won it 3 times and the 76ers and Pistons won it each once.
From '80-'89, JUST 5 DIFFERENT teams played in the NBA finals with the Rockets being the only team to make it to the Finals and never win it.
- From 1990-1999, there were also only 4 teams that won an NBA title during that decade. The Bulls won 6 (arguably should've won 8), the Rockets won 2 times, Pistons once, and Spurs once.
From '90-'99, ONLY 9 DIFFERENT TEAMS played in the NBA Finals.
- From 2000-2009, there were 5 teams that won an NBA title during that decade, which is one more than the 80s and 90s respectively. The Lakers won it 4 times, the Spurs 3 times, and the Heat, Celtics and Pistons each won it once.
From '00-'09, there were 11 DIFFERENT TEAMS that played in the NBA Finals.
- From 2010-2017, there are already 6 teams that have won a title in 8 years alone. Only the Warriors and Heat have won the title twice while the Cavs, Spurs, Mavs, and Lakers each won it once.
From '10-'17, there were 8 DIFFERENT TEAMS that have played in the NBA Finals.
So in all actuality, there is actually more parity in the 2000s and 2010s than the 80s and the 90s. Parity has not been decreasing but actually increasing.
The NBA has always been about Superteams and dynasties. The Lakers won 4 titles in the 80s and the Celtics won it 3 times. The Bulls won it 6 times in the 90s and the next closest is the Rockets that won it 2 times. The Lakers won it 4 times in the 2000s and the Spurs won it 3. In the 2010s thus far, the Heat and Warriors have won it twice and there are only two Finals left in this decade. EVEN IF the Warriors win it in '18 and '19, they will only have won it 4 times in the decade which will be the same as the Lakers in the 80s and the Lakers in the 2000s.
Realistically, over the past 3 decades, 1 NBA TEAM HAS WON THE CHAMPIONSHIP A MINUMUM OF 4 TIMES in the 80s, 90s and 00s. This false narrative of the NBA no longer having parity due to Durant's move is completely BS. The NBA has always been dominated by 3-4 teams each decade with one team winning 4 titles each decade.