Hi Germán!
"The problem, as I see it, is that too many students currently think it is more useful for them to devise ways to cheat in exams than it is to dedicate time and effort to study hard subjects."
An eternal problem. Your analysis could be applied to many other situations of human life. Thieves, drug-dealers and (some) politicians think it's more useful for them to steal, cheat, etc. than to dedicate time and effort to live an honest life.
In all these domains the answer is the same: education, education, education. As a wise educator yourself, Germán, I'm sure you will know this. As a former educator I know how education can often feel like a Sisyphean task.
Joseph
