This has been proposed and the protocol developed and a sample app deployed in Bangalore [1].
The app leverages the ONDC protocol and Beckn [2]. There are technical talks on it by the founder of Beckn who was also the architect of Aadhar which is India's Biometric identity system. Beckn was also cofounded by the founder of UPI, which is India's digital payment system and currently the largest in the world. Great Video explainer on Beckn [3].
[1] https://www.ft.com/content/b1bc25c5-43c8-458d-bdc3-ab66c7cb5... / https://www.youtube.com/watch?v=3oedj_fGXAs