I think it all goes down to cost! It may be cheaper to hire someone to do it than to invest in a robot and electricity etc. This also may have the effect of having to change the manufacturing line somewhere up or down the line to have more robots and the list goes on.
I think if they start modernising the manufacturing line, then they could lose their edge over other countries like Brazil.
Saying that, I agree with you! We need more automation on the line