keep rocking the journalistic awesomeness,
erin
This is a great story that asks questions I've long had.
When I moved to SF in 1986 to work at the Examiner there were still rows and rows of Chinese/Filipino cafeterias along Market between 5th and 6th. They were dingy places but they always seemed busy. There was a feeling of active, if admittedly down-market, street life. Within a few years all that was gone. All the cafeterias closed up. (I think there's one small one left at the corner of 6th and Market, but the places I remember were much bigger...)
I always wondered if this was a function of some redevelopment plan gone awry, or if the clientele of these establishments had simply moved away (or aged/passed away), or what.
Nothing ever moved in to replace those places, although the area between 4th and 5th gradually got transformed by the new retail malls and chain stores.
I would definitely look into the ethnic angle here -- check in with people who know the long story of the Filipino community in SF.
Keep up the good work.