I do believe I have something about 24 SBI shares. Did sponsor 20 of those and got 4 ones sponsored!
It is true that the bidbods would ran out of business if there were no customers. But this will be an utopia! You could use the promote feature to give your post some attention, but this steem is burned. And why would you use it, if there is a possibility to invest to get attention and probably get 90% of the investment back!

But I do appreciate that you are openly writing about it, and try to calculate if you can make a profit with it or not! I also don't judge you for using them, I did use then once in a while!
It is always nice to have a respectful discussion, this is what the steem blockchain needs. More interaction between the users, only this could make the steem blockchain a real game changer!