You have hedges suggesting low confidence in how accurately you have described the economic position, such as making half the econ sentences questions. That presents a rather weak foil/contrast for the argument; it might have been stronger with simply, "One simple way to signal quality X is by having quality X." ("Signaling is not always about sending signals"?)

If bringing economics into it is so necessary that it goes in the title, this sounds like a case where more information should be gathered before even proposing answers.