Earlier quoted context omitted.
This is the weird thing. Americans love to complain about how stupid their unions are, and according to some anecdotes, some American unions are indeed pretty stupid. But these are the unions created by Americans. I don't quite understand the underlying cultural issue that leads Americans to create unions they hate. It's got to be something cultural. Or is it something in US law? It seems so easy to fix, but somehow…
I don't know USA very well, so that is just a feeling. - a lot of what the union do/did have to be understand in the context of important fight between the unionized worker and the companies that want to undercut union influence (and often undercut workers right) - a lot of thing union do / used to do, make sense in the past, but are less relevant now. - Human is quite good to do stupid things, to create some bureauc…
I would also mention goals.
If your goal is absolute efficiency in running a convention then you end up with poorly treated and underpaid workers.
If your goal is making sure the convention doesn't poorly treat or underpay workers, you end up having to find someone to plug in your equipment (also I suspect there are legitimate safety and security concerns for a prototype electronics conference).
You can't blame convention workers for preferring the latter situation.