Well it makes sense to me to suggest you switch providers. For all sorts of reasons some people change regularly to get the best deal but a very high figure (over 50% I recall) have never changed. Martin Lewis and others have regularly shown that significant savings can be made by shopping around. And many still pay by the more expensive methods- mainly quarterly billing- when cheaper rates are available for DD , online billing etc.
The companies know that the majority of people will not shop around so will pay the new prices.
The pricing structure are still deliberately complex. I have a spreadsheet that calculates usage month by month and takes account of night rates/day rates, primary rates, secondary rates etc, but it shouldn't have to be like this. The regulator needs to be more active.
I wonder how our energy prices in the UK compare with the rest of Europe. Does anyone know? My guess is that prices are high all over, except perhaps for those in Eastern Europe that benefit most from fracking