It is the same in Indonesia, some giants minimarket chains doing expansion in all areas of housing. The biggest chains are indomart and alfamart. However, there is a group enterprenours from Kuningan. Kuningan is a distrik in West Java. They become urbanites to open small stores in all areas in Jakarta and cities in West Java. They targeted travellers and they open 24 hours. They sleep in the small shop. They also serve hot coffee and hot instant noodles.
Pic : https://www.maxmanroe.com/cara-menata-warung-kecil.html
The small store is occupied by two people. You can find these kinds of stores in Jakarta. They make good profit.
RE: The demise of the mama papa shop