For years, this scenic Russian River Valley enclave has worked to foster a community supportive of local businesses, in part, by making it difficult for large chains to move in. In 2018, Sebastopol leaders created an outright ban of certain chain businesses - particularly restaurants and hotels - from its downtown. But this month, one of the nation's largest pizza chains plans to open up in that exact downtown area - much to the concern, and surprise, of many locals.