Because Adana is a more industrialized and crowded city compared to Aydin&Bolu, and Çukurova is one of the main districts of Adana. When you look at the stats: https://en.wikipedia.org/wiki/…_Turkish_provinces_by_GDP
Adana doubles Aydin and it is 6 times bigger than Bolu. So I expect Çukurova as a representative of Adana to have a bigger budget in Sultanlar Ligi and as I mentioned above they can attract more sponsors since they are from a richer area. Of course my guesses are just on my expectations judging by the stats.
Nuh, there's no such correlation. Kuzeyboru is from one of the smallest cities in Turkey but they invest way more than clubs from Ankara for instance. Also İzmir is 3rd biggest city and with a lot of rich sponsors but they haven't been in Sultanlar ligi for a long time.
Similar situation with male teams: Cizre one of the poorest and least developed area of Turkey but they made a team that reached 8th place in the ranking which is a big success for a team just promoted to Efeler ligi👏👏