Please study the company Telkomsel, which company is a business unit of the company PT Telkom, Tbk. Please analysis of why the Telkomsel company is able to become a competitive/superior company compared to its parent, PT Telkom. Even like IndiHome, they also follow the success of Telkomsel. Please, analyze what strategies Telkomsel and IndiHome have done so that they have a positive image from the community and what is being done by PT Telkom, is there something wrong with this strategy? Explain with supporting theory.

Use reference sources from scientific journals and write them down clearly.