Threat of substitution:
Restaurants can be substituted by supermarkets and street stalls. People can choose to cook their own meals by buying products in the supermarket. Furthermore, if a person does not want to cook, they can always choose to buy some food on a stall on the street and bring it back home or eat somewhere else.
Competitive rivalry
As the threat of substitutions and the hight power of customer, together with the big number of restaurants offering the same product, the level of competitors is hight. More restaurants must compete for the same customers and resources. Also, as notice out of experience the customer loyalty is quite hight