It did bother me in Deathly Hallows Part I the Death Eaters assaulted with zaps tha broke things, as if they couldn't think of anything more creative than shooty-shooty.

At the point I took the Potterverse world-building seriously (this was before Rowling turned out to be a fascist all along) I assumed the technology developed by muggles would completely outclass wizards in a stand-up fight (hence the need for the masquerade), but also the plutocrats driving us to autocratic rule and extinction by pollution would quickly secure control of the established magic-regulatory bodies. Essentially, the aurers work for the establishment elite, including The Boy Who Lived.

And I bet Rowling would see this as a good ending.