And not only that, but the league had half as many teams then, so winning a title was twice as easy. Basically a Finals appearance now is like a title 30-40 years ago.
Despite that, 40 years ago it really helped if you playing in Boston.
The sad part about professional sports is that every year there is one winner and every one else is a pathetic loser. In college football you get to finish the seaon with a bowl win. In college basketball there is a major honor being in the "final four". But in professional sports, every team is denigrated as being garbage if somebody else won.
It's not really fair. But no other sport has as many dynasties as NBA basketball.
Lakers 1979-1991 5 Championships - 4 Times lost in the Finals
Celtics 1980-1987 3 Championships - 2 Times lost in the Finals
Sixers 1979-1983 1 Championship - 2 Times lost in the Finals
Between 1979 and 1986-1987, the only other team to even make the finals was Houston in 1985-86
After that a lot of different teams got to the finals, but there was a very long string where very few teams won:
1988-1989/1990 Pistons (2)
1990-1992/1993 Bulls (3)
1993-1994/1995 Rockets (2)
1995-1997/1998 Bulls (3)
1999-2001/2002 Lakers (3)
Spurs never did it back to back but won (4) times
1998-1999
2002-2003
2004-2005
2006-2007
Unlike in the 70's when a lot of different teams won, the only "One Time Winners" have been
Sixers 1982-83
Pistons 2003-04 (no players remained from previous wins)
Heat 2005-06
Franchises:
Lakers 8
Bulls 6
Spurs 4
Celtics 3
Pistons 3
Sixers 1
Heat 1
Seven teams in 28 years. It is amazingly hard to crack in and takes a fair amount of luck. If Karl Malone does not get injuried in the 2003-04 playoffs, the Lakers probably would have won. If Duncan doesn't get hurt in the 2005-06 Conference Semi-Finals, then the Spurs would have gone to the Finals and beat the Heat.
Not since the learly 80's have there two dynasty teams in each conference. For the past 20 years, the number one and number two best teams have generally been in the same conference.
On the plus side, no dynasty lasts forever. The trick is to get to that level.