1) Recurring income
Fiverr does not have recurring income, which by definition “is earned by creating or acquiring an asset that continues to pay of profits regardless of if there is still active work being done to the asset.” There is not even a subscription that’s automatically renewed AFAIK.
I’m not saying whether it’s a good or bad investment, just that each transaction fee that Fiverr earns has to be, well, earned each time for each job.