No, that is not a correct analysis. First of all, no offer is made in any of the above scenarios that the purchaser will actually make money from their investment, and in all the above cases, the purchaser actually receives value for their investment.

Investing in Steemit on the other hand is made with the claim (assumption) that those investing will make money from their investment. Yet by the very design of Steemit, it ensures that the vast majority of investors will never make any money, with the bulk of the rewards going to only a very select members at the top. That makes Steemit a classic definition of a ponzi scheme.

Feel free to contact the FTC or the FBI and ask them. If you tell them the whole truth, they will tell you exactly as I have.