On: How about an “urban wealth fund”?

[ebiester]

NYC has them. They're in some stations in Boston, but many just don't have the space for it. IIRC, they're non-existant in the Bay Area.

[khuey → ebiester]

There are a couple shops on the mezzanine levels of the BART stations on Market Street.

[tl2747 → khuey]

Civic center station has an open air drug market, but I'm not sure the city is getting much in the way of revenue from that.

[huac → tl2747]

Funnily enough, a bunch of the stations I saw in Korea and Japan had 'public market' areas, where they rent out stalls to local/smaller merchants.