There are a lot of people who are bad at business.
A $40 paper flower, and a $2000/mo lease. Assuming you are sole proprietor and have zero employees, and need an additional $2000/mo to live a meagre existence (food, apartment, etc.) and it takes you 15 minutes to fold each flower.
Minimum revenue to stay afloat, 800 flowers per month. You'd need to fold for 200 hours, or approximately a 40 hour week of folding. That leaves zero time to do any marketing. So you're relying entirely on foot traffic, or you're marketing as overtime.
To reach 800 sales per month with something so trivial, you'd property require a reach of at least 20,000 customer touch points per month, each who has the time to chat about paper flowers, because your conversion rate is going to be shit. If it's passive reach, you might need to get an ad in front of half a million per month. You'd need to be a tiktok celeb or something to get this reach without adding expensive ads. And that's a fucking gamble and a half.
There's no way this model works. And the fact that someone tried it isn't something to celebrate. They possibly poured their life savings into the drain, went bankrupt, and hopefully concluded they were bad at business.
If you want to sell paper flowers, do it as a side gig from you home. Or make them so luxurious that you can sell them at $1000 each, and rich people buy them as wedding presents -- then you only need to sell four per month and can spend the rest of the time marketing.