I can help out here. The BOTTOM is when office space is cheap enough for developers to buy and convert to living quarters...and this price is based, in part, tied to the conditions of where the office is located. If located in “The City”, then the sales/rental price will be far lower than the suburbs, as the yuppies will not be nearly as willing to live there, as they were only several years ago, when violent felons were considered people that should be removed from society.
Some people moved to the city center so they could sleep in and walk to their jobs. If the jobs are remote that attraction goes away. There are still folks that like walking to the bars .