“Honeybees do a waggle dance to communicate food sources — it’s metabolically costly, so only genuinely valuable sources get signaled. This is an example of a costly signal being inherently trustworthy. Cheap signals (like just “pointing”) would be gamed.”
Increase the cost to produce and we don’t have any problems.
Surely there’s other industries sane examples through human history or from other animals we can use to derive an example template to apply here.