I honestly believe humans can turn anything into a gamble. The gamble is more about the effects of a situation on your brain and how the decisions following those have big effects on you (most notably financially). That's why even freakin loot boxes can be set as gamble.
But an interesting discussion would be "Are crypto currencies going to last long?". I don't mean it in a "Huh, fuck it, it's a bubble and it's gonna crash!" but rather "how quickly will it take for the next revolution to pop in and take place. Everything keeps on going faster. I don't see why it'd stop anytime soon (except the apocalypse..)