You're entitled to any opinion you like but I'm struggling to see what your point is in the context of this thread. What has people with Saturday jobs got to do with anything?
And yes it fucking sucks that Brixton has been taken over by expensive bars, exclusive members-only clubs and rip off cocktail bars, but you (apparently) focusing on Jamm seems to really be going for the wrong target.
Apart from the fact that they've been here a lot longer than most of the shiny new businesses rocking into town and have supported the local live music/dance scene for years, it's clear that they're trying to be inclusive,
They've stated that they will support local workers in the low paid hospitality industry by offering them free entry to the 414 and provide discounted beers. Do you see any other venue in Brixton offering that?
As for me, I'll continue to do what I can to offer totally late night free entertainment which may not to be to everyone's tastes but it'll be anything but exclusive.