I don't know the specifics of CS2's skin system but I know that high rarity knife skins were absurdly expensive because the only way to get them was to gamble them out of lootboxes. I say were because Valve added a way to trade up 5 of a lower rarity item into a random higher rarity item which immediately crashed the market for the knife skins and it seems multiple people have committed suicide because of the financial losses they suffered over this.
It's honestly hard to comprehend stupidity of people having that much money invested into something that can be devalued instantly with zero warning or recourse.