I don't think you are right about the takeaways: there will be some need to meet at places that have food at low cost, and those places will naturally want to do take away on top.
I also don't get why you think they will be converted into poor quality housing, since poor quality housing is mostly old housing that isn't maintained probably and/or is in a bad environment.
The takeaways will also disappear, why do you need a shopfront when everything is delivered on a moped via an app.