Yeah true and historically the NBA built rivalries through the playoffs, but if we’re in an era of parity with different teams making runs every season then less chances of repeated matchups
For example the Lakers & Spurs played each other in 99, 01, 02, 03 and 04, 5 times in 6 seasons.
I also think we have to be honest about "rivalry"
Bulls vs Knicks was a rivalry because (1) Jordan vs anybody in his way was going to be the most important thing ever, given his iconic popularity... and (2) the Knicks vs anybody in their way was going to be the most important thing ever because they as a franchise are iconically popular. So lightning in a bottle occurred with both having extremely competitive teams at the same time; it's not like the masses would care if Reggie Miller was stressin the Cleveland Cavs to 7 games in the mid-90s..
Lakers vs Sacramento, Lakers vs Portland, Lakers vs San Antonio... Lakers vs itdoesn'treallymatter just as long as it's Shaq Kobe Phil and Jack Nicolson vs somebody that can play Thanos to their Avengers.
HOU was right there with CLE as the most competitive team GSW ever faced, i'd argue even more-so with bad blood and years of great regular season and playoff battles... but
CLE whateverteamLeBronison vs
GSW whateverteamSteph(orKD)ison was the rilvary. Not too different than Brady vs Manning tbh.