It’s the January sales. And normally we would be examining the various “biggest-ever” promos and “half-price” sales for signs of duplicity/serious strategic intent.

But even in a deflationary market, price cuts are playing second fiddle to the cacophonous announcements, of the past seven days, from the big four’s top brass.

Not that any of this is exactly a shock.

It can hardly come as a surprise that Morrisons boss Dalton Philips is going, for example. He’s had five years, and while no one doubts the difficult circumstances in which he’s been operating, or the weaknesses of the Morrisons business he inherited, it’s a miracle he’s hung on this long, given the three-year-long deterioration in sales and profits. Nor can we be surprised about the streamlining of the senior and mid-level executive at Asda. If it’s disappointing that the excellent food CMO Barry Williams won’t be on the trading floor (he’s now chief customer officer), the truth is, in this environment, costs, complexity and overlap need to be eliminated.

The same goes for Sainsbury’s. As upsetting as it is for the 500 employees who are losing their jobs, CEO Mike Coupe has to prune costs if Sainsbury’s is to compete on price. Even with these changes, Sainsbury’s has already admitted profits are likely to decline.

And then there’s Tesco. Closing the HQ will save a reported £250m. On top of that, there are 43 stores earmarked for closure, scores more are being cancelled, team leader roles are being eliminated, and the defined benefit pension scheme is being scrapped. Again, these are desperately sad for the individuals involved but - like the other momentous decisions above - what we are witnessing is the fallout from 2014.

Two weeks from today, The Grocer will publish its Power List. It’s a tricky exercise as so many power brokers have either gone or been severely weakened. The balance of power is shifting within grocery. To the discounters, most obviously. But with the big four unable to grow (and the advent of GSCOP), I can even see the balance of power swinging back to the supplier.