If some of you want to show off your gift of tongues, then also show off your raising of the dead, and your verifiable healing.
When we stick with only those gifts that cannot be proven, and no one seems to be able to do those that can, then I smell a rat. Even tongues can be proven wrong with an interpreter, but it just so happens no one does that type, just the type that only God can understand. Imagine that?
One would think that those who belong to the churches that love to pretend (the fakes/abusers of the idea of gifts for profit that the OP mentioned) to show how holy they are with a bunch of pure gibberish, rolling on the floor, and molesting the congregation with their suit coat, would figure it out for themselves something is wrong, just due to the outrageousness of it all, not to mention the above, very sensible clues. But they don't....amazingly.
But as long as people are after something that seems extra ordinary, something a preacher can sell to those whom are not satisfied with a humble true form of Christianity that doesn't try to show off their power, and feel they have to make God more exiting in order to draw their attention, these things will flourish.