Don’t know much about SD downtown, but in LA downtown the math just does not work for luxury condo’s/apartments,
The percentage of people who work downtown who can afford these is very small first of all (most who live in them actually commute to the burb’s to work as that is where most High-Tec jobs are really in LA).
LA downtown has really gone downhill over the last few years (even before pandemic), after a previous few years of renewal.
IMO WFH is the new normal now and Office work will likley never be the same as it was.