That's true for people who do these things without an ideologically underpinning. This is why we need always explain how feeding off the crumbs is always harmful, even if it appears to have material benefits. I.e. it's better to be in a union, even if the wages seem to be increasing on their own. It's better to do a co-operative over a small business etc.
And as the system collapses from its own contradictions, its capacity to provide these crumbs drains, which why it's easier to agitate during these times.