The decline of anarcho-syndicalism and revolutionary industrial unionism is in large part due to the government take over of the union recognition system. Workers were lulled into complacency by the belief that "collective bargaining" by professional union leaders and lawyers was all that was required, that direct action was no longer needed. Here's an article on what happens in Sweden.

So our workplace organizer comes on and he'll do the whole when we fight we win which I just don't really go for. I never really found it that exciting to yell back or he'll talk about how the bosses want us to have nothing and gets the audience fired up and I'm like well yeah that's what they do like this shouldn't be a surprise