It's imperative you take your time, know what you're getting into before venturing into it, remember all that glitters isn't gold. If it's too good too be true,my friend I can tell you for free, it's most likely to be too good to be true.
Stay safe my friend.
While your advice is golden, I can tell you for free that there are those who will still fall for what you've pointed out. To these ones, you're just blinking in the dark. To them, nothing attracts more than pyramid schemes or Ponzi schemes because of the unrealistic ROI they lure people with. Those who subscriber to Ponzi want easy and quick ROI and that's h they fall victims. Now is the time to catch the greedy ones. Scammers know this and will always restrategize their modus operandi for such a time like now.