>>149193786championships have nothing to do with market sizes, its based off location and overall value of the team, another factor is how hot/popular of a destination it is for free agents to sign
usually small market teams have to build themselves from the draft and trades, you rarely ever get big names going there unless they get traded or they're way beyond their prime
example: the bucks are another small market that won a ring not to long ago, their main star giannis was drafted to the team, but they've never really signed a major name in free agency
however, they were able to acquire damian lillard in a trade, although it backfired (but thats a different conversation)
these aren't permanent labels either, if a team manages to stay successful for long enough they can turn themselves into a larger market, like the warriors did, although this is a rare occurance, and gsw's success also has to do with the fact that they're located in california, which made it a lot easier to attract media attention