JPMorgan is holding its annual health care conference in San Francisco this week. But some attendees -- when gazing out the windows of their $2,000-a-night hotel rooms or past the doors of another champagne-infused party -- have reportedly noticed the city has lost ground in its fight against homelessness. “I feel unsafe walking around at night, especially as a young woman,” Selin Kurnaz, a co-founder of Massive Bio, told Bloomberg. Other executives at the JPMorgan Healthcare Conference have gone on social media to voice their concerns about the city's decline and have posted about watching city officials clean human excrement off the streets. The event -- which is expected to bring in about $51 million...