It depends on your luck mate, as always, perhaps you didn't play long enough to notice how quickly your balance got depleted when you had bad luck. In high volatility slots, winning is rarer than the low one, so that's why "buying feature" often used like all-in before gamblers go home empty if he didn't have a big bankroll. Otherwise, gamblers usually have a big bankroll as @Bitinity said, so even they are in the losing streak, they still can recover.
I know but it's more like a theory , I mean assuming someone is playing with only what he affords to lose ( pocket money most of the time ) he will most likely have a point where he hits a decent multi with high variance slots and most likely it will be followed by a cashout
unlike the slots with small wins , I see players there tend to continue gambling even if they hit what's considered a good payout comparing it with the variance level since the payout won't be that much of satisfying so I see they tend to wager much more with these slots