@Daca
The problem is that most of us are very committed to our jobs. Another reason why strikes should be a last resort
I'm not sure it's always about 'commitment' to our jobs. I actually have very serious issues with this idea but that's for another thread maybe!
I think it's because we all have too much work to and we're over-stretched. I know that people will say "that's exactly what we're striking for" but I don't see it in practice. I don't see how the UCU strike is practically addressing the issue of workload.
I also think it's because research is the most enjoyable part for most of us so I think a lot of people are just enjoying the opportunity to have a couple of weeks at home working on research. For many, they're willing to sacrifice pay for this.
But, yes, the autonomy of academia means that a strike means basically nothing. It's not like a strike in a factory where production just shuts down, things don't get made, orders don't get filled, customers don't get their goods. Nope, work will be caught up on and everything will go back to normal. For me, something like UCU members refusing to produce journal articles or boycotting the REF would be much much more effective but that, of course, means personally sacrificing future career prospects which few are willing to do because for all the talk of solidarity and collectivity, academics are mostly individualist career-focused single unit entities.