And this is what I don't understand about these articles.
TKG is the holding company. It holds Telkom Mobile, Telkom ISP, Openserve, Gyro (builds towers), BCX, etc. All of these are separate companies. Please get this right, MyBB.
rain wants to join forces with TM only.
In my opinion, this is a good move for both companies. Anything to compete against the MTN-Vodacom cartel. rain is useless on it's own, but it's got quite a large number of 5G base stations already in operation which Telkom Mobile needs. Telkom Mobile is more consistent in terms of service delivery.