It's not as bad as it looks- of the seven families named in the linked Seattle Times article, only three build webs, 3 are cursorial hunters, and one (the pirate spiders) are obligate spider predators who hunt web-building spiders on their own webs.

In late summer/early fall one could easily collect 12 families of spiders from a clump of trees like that, ginormo spider condo or no.

I haven't heard anything about ecologists observing the spiders' behavior yet. When someone observes an orb-weaver and a funnel-weaver and a sac spider sharing prey- that's when humanity is doomed.