An important part of the biz is developing a regular crowd. Word of mouth.
Kala ng mga iba... open up ka lang. Right price. Right food. Tastes okay... solb ka na.
NOPE.
You've got to have good food and a target market that keeps coming back for it.
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Kaya maganda mag-hunting ng authentic foreign food near the technoparks and other places where other foreigners work... (
Chinese food in Banawe, anyone? 
) Restos that thrive there thrive because they are selling food for a discerning target market.
They managed to get that "green plate" for the Ertiga, and I heard/seen news that they're pushing...
Suzuki Fronx