Addie’s at Park Potomac has been shuttered throughout the pandemic — and insiders tell us it’s never going to reopen. The upscale restaurant arrived in the summer of 2017, with owners Jeff and Barbara Black promising to recapture the magic of their original Addie’s eatery on Rockville Pike. The Blacks now own nine D.C.-area dining spots, including Black’s Bar & Kitchen, Black Market Bistro, BlackSalt and Pearl Dive. Almost all of them have either remained open, reopened or announced a return date — but not Addie’s. Black Restaurant Group did not return our messages this week.