Ideally you'd have hardwired cameras with a battery backup that store to local drives with a cloud backup. This requires significantly more upfront and ongoing

Ideally you'd have hardwired cameras with a battery backup that store to local drives with a cloud backup. This requires significantly more upfront and ongoing costs... and most criminals aren't sophisticated enough to cut power or jam wifi. Lots of times they won't even wear masks. The average property crime is still an opportunistic smash and grab. Stick up wifi cameras are an affordable "good enough" for most cases.