You can only do what you can do; as in the old Phantasm movie, “I can’t use him in pieces”.
You may not be able to take those people on directly—but even incidental help can be critical. Perhaps you can find other places they can go; perhaps you can just provide directions. Don’t underestimate the power of information and networking in cases like this.
And thank you for thinking about it, and making it important :)
I think you might be missing something more obvious here: tech has a huge amount of slack when it comes to money. If I were running a tech event of similar size to what you described, I wouldn’t bother charging, because it would be a waste of my time. When you make half a million dollars a year, funding something like that yourself basically comes out of your fun budget; you don’t really even think twice about it.
Yoga and new age groups though? Not nearly as flush with cash.