For some reason some people (usually the clueless, but not always) assume that if you just buy and install some $DEVICE the problem at hand will go away without any other issue.
How ? Magic!
That’s why the big vendors make the big money. People thinking that just throwing money at the problem will magically make the problem go away. It’s not always someone there to point out that this is not the case or if it is his, his or her opinions are ignored.
Let’s be clear on one thing: the only magic present in $DEVICE is the magic smoke. When the magic smoke goes out, the $DEVICE stop working.