Hit by rising commercial rents in many big cities LGBT bars are facing an additional competition from dating apps (Grindr and Scruff) that have eliminated the need to meet first in bars or pubs. Gay men have been quick to adopt the new technology.
Maybe old selfies, retouched, fake, professional misleading pictures and endless texting might bring some gay men back to bars.
Unfortunately because of high rents and endless regulations (pointed by @bigjoey on another threads) so many stores in SF are empty... Polk St now is a great example!