[desas]

I don't think that the point is that HMG haven't thought of "planning" and "not leaving business out in the cold". I think the point is that HMG's execution hasn't been very good.

[OJFord]

But that's useless and boring. If they haven't got a solution to offer that they believe is better, why bother saying anything?

[desas]

It pushes HMG towards executing better or changing priorities.

That and it raises the their personal and party profile while highlighting the opposition doing poorly.

I'd argue that UK politics don't tend to be won on ideas but mainly on perception of competency.