Steeminc might be unsustainable but the blockchain seems fine to me.
I think the current model is fine. I'm not convinced we even need SMT's. I have absolutely no plans to trade in my Steem for any SMT tokens.
We might be able to create a new standard.
We might have more of a user problem than anything. You really need to try and learn and make a lot of adjustments on here. I know I have made some mistakes but overall I think I have done well.
I think it is a game of numbers. I think eventually when we get up to 10 million accounts we will have 1 million active accounts and it will be game time. Steem might be at $100 or even $1000 at that point.