c9 has an academy team, a female team, they have invested into the game since the beginning and they've shown commitment. They are one of the few orgs to have a pretty much locked spot for franchising
I never really watched league or anything like that so I could be wrong but I think Sentinels are a bigger org now and have put in way more to VALORANT than league but tell if im wrong
An argument can be made that having popular players contributes to the game therefore giving them a big reason to be allowed in franchising. But yeah other org have seemed to invest more into the game