People did make money with it back when csgo always had a solid playercount. Old but still actively dropping cases were cheap and guaranteed to make a profit when they got discontinued but I wouldnt trust that now after cs2 lost like 20% of players in 2 months
Same with sticker capsules, buy them cheap when theyre on discount and sell them a few months after the operation ended, I again wouldnt put my money on the line seeing that valve sold I believe it was the stockholm capsules for months longer than they first said they would