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Competition minister Andrew Leigh just spoke with ABC RN about, you guessed it, competition.

Speaking about supermarket prices and concentration in particular, Leigh said he is worried that Australia's market concentration has increased over recent decades".

We've got evidence now from very good micro data, which wasn't available a few years back, that market concentration has gone up, that markups have increased - that is the gap between costs and prices - and that there's less job switching than there was in the past which is a problem, because switching jobs is one of the best ways people boost their wages. All of that points to a less dynamic economy, and maybe one of the reasons why we just had the lousiest decade of productivity growth in the post-war era.

It's not a priority that we're focusing on at the moment.

In London to support Julian Assange's hearing on whether he can appeal his extradition to the US. Julian's extradition would strike at the very heart of free speech [and] democracy. Enough is enough. The US must drop the extradition of Julian Assange.