In my personal opinion, I think KR has the developing talent pool in becoming a decent top tier region in APAC. However, that time might not be now (if we were to talk about T2-T3 below).
DRX, NU, Damwon (Dplus), F4Q, and ex-ONS were the only ones who had inter-regional and international experiences.
NU became a fossil. ex-ONS has since been gone and some went to Damwon. Damwon alone didn't have the best of times in the EA LCQ. F4Q did decent, but it was clearly not long term. Out of all four, DRX had the management, resources, talent, and experience, to hold the hegemony that is "Korea's Best Team" just because they didn't change out their roster for the majority and they went to the most intl tournaments.
However, reminder that it took even VS until Masters Berlin 2021 to get here. It took a while. Valorant wasn't that rising game thay is currently ranked 3rd in PC-Bangs across South Korea. Just look at the current VCL KR open qualifiers!
New talents and old talents coming in, new ONS got knocked out, mid-T2 players in Rio Company are having a resurgence. New names and new teams are popping up (62 registered for the open quals.)
Besides the hodge-podge teams of Gen.G and T1 (who spent the majority of their time in NA and barely competing in KR maybe except Munchkin), DRX is the only one that maintained their status quo.
I believe before talent, stability will come first into the KR scene. The T2 scene is recovering from losing DRX, but they still have Dplus, NS, CNJ, WGS, Maru, and SPEAR, all local and proven domestic names.
When that T2 stability finally comes, I believe talent will flourish.