I wasn't talking about fiscal mismanagement, so let's keep the talk away from politics.
My point was that the lighting engineers go to the accountants saying 'We want to buy 2,000 of this lantern at £100 each and they'll last 15 years.'
The accountants say that 'oh no, there's only £10,000 in the budget for buying lanterns, buy ones that cost £50.'
Engineers say at that price they'll only last 3 years, it will end up costing £30,000.
Accountant answers 'so what, it's only this year that matters.
It is even worse:
A city council wants to replace lights, lets say 2000 of them.
So they launch a public request for 2000 lights suitable for the city.
2 bidders come in:
One offering ones with 15 years guarantee for $100each,
Second one with a model estimated to last 5 years for $50 each.
Now the council organizes assembly, where they vote for the first supplier.
But the 2'nd one isn't happy to loose there, so they accuse the council of "neglecting good care of public money" and ask the court to forbid the finalization to the deal till court final decision. At least the project is put on hold for months till court final ruling. And then often the ruling ends up bad, because "buying the more expensive is clearly violation of the duty to take good care of public money, when the cheaper does fulfill all requirements set for the bidding" is quite hard to defend against. Plus very often it includes accusations like "The other company must have bribed the council to select the more expensive stuff, when the cheaper fulfills all state requirements the same way". Arguing with the first supplier being more than 30% cheaper for bottom line wont do much, when "the lifetime was not in formal requirements so it means it must be irrelevant".
Yes, this is how "corruption prevention" laws work in the real life.
One or two such cycles and you as council member wont vote for anything than "the cheapest" on paper and hope it will hold at least a bit.