Private companies can certainly hold their own when it comes to waste and incompetence. Government doesn’t have a monopoly on these things.
But at least they won't put you in prison if you decide not to buy their product.
There's absolutely an equivalent, publicly elected officials lose re-election campaigns all the time.
If a government entity wastes too much money, their budget is increased for the next fiscal year. There is no feedback loop to govern the waste.
[1] https://hbr.org/2018/03/is-lack-of-competition-strangling-th...