At least for the vast majority of casual users, this isn't anything remotely close to a $100/day habit. Common sense should inform us of that, even if we aren't intimately familiar with how much pot actually costs.
$5-10 a day is closer to the reality for most users.
In the past this might hold true but no longer.
That's pretty extreme, even for heavy smokers, but far from impossible.
And yeah, definitely not a sustainable or healthy habit...I'm ok now, but my career took a permanent hit. Oh well.
I realize I'm being pretty pedantic here, you're right that spend $100/day requires massive usage plus buying moderately expensive weed. But it's not, technically, impossible.
Who the duck is smoking that much in one day???? I don't know a single one of my massively addicted stoner friends who do even a third of that in a day...
A 100$/day habit for a wealthy person is nothing and, unlike cocaine, that addiction will not ramp up into a 1000$/day habit. But for the not-rich that 100$/day is devastating.