Most urbanites say they'd like to see more local and independently owned shops and fewer chain stores in their neighborhood. But many local businesses find that leasing retail space in a good location is nearly impossible. Many developers and landlords prefer safe "credit tenants," which are typically national chains that can commit to long leases and afford to pay a premium. It's an economic reality that keeps mom-and-pop shops out of some of the city's most lucrative addresses. We'll hear from local business owners and landlords about the challenges on both sides.