Hello!
This is a very typical market sizing case, where the key steps are:
- Calculate the total population
- Calculate the % of population that could be interested in this product (this could be done by clustering -the classical ones are age groups, purchaching power, etc.-)
- Calculate the % of the total adressable market that any firm in particular could have -in case it´s asked only-.
For that cited market share, consider how many restaurants need to be open.
I see you only take into consideration rush hour and accomodation during it, but what about take out? It´s huge, and growing.
I would then rather estimate the # of shops considering kitchen outocme capacity during rush hour.
Hope it helps!
Cheers,
Clara