If you compare them to SM and JYP older groups, the difference is striking.
SNSD is still super relevant as a group 15 years into their career. Taeyeon is also one of the biggest female soloists in SK, Yoona has a successful acting and modeling career, and I feel like Sooyoung saw a rise in popularity recently as well thanks to her acting roles. Even taking it back to 1st gen, Eugene is pretty popular thanks to her acting in Penthouse. For JYP, Sunmi is most likely past the peak of her career but she still made it pretty big on her own. She is definitely better known amongst kpop stans than any 2NE1 member that is for sure, and her song with JYP actually did really well in SK last summer. And Suzy is still huge, starring in huge dramas and getting big CFs.
Meanwhile, zero 2NE1 members were able to have successful solo careers, whether it be in music, acting, modeling, or anything else. Dara is extremely wealthy, but it's mostly from non-idol related business. While she stayed with YG until last year and never even tried her hand at a solo career, the rest did and all bombed. CL can score an event to Met Gala, sure, but at the end of the day she is still struggling to sell 10k and charting exactly nowhere. It's crazy to me that a big 3 group who were so big at their peak have had such little success as individuals...YG doesn't even blacklist their former idols in the industry the way SM does