That is a lovely image to demonstrate steem os more than steemit. It does look a little out of date. From my understanding magicdice lost their magic amd a few others there are also less relevant forbwhatever reasons.
In anycase, I agree with what you say mostly. I think we don't need to rely on steemit.
Apps are going to come and go. Not all will be successful for various reasons.
Nevertheless, there are going to be many that will be.
Posted via Steemleo