If you have a look at what is rewarded by SC and which posts receive booming votes (an SC upvote) you will see that these posts aren't the best and if everyone who receives ir invests in Steemit?

Valuable comments are hard to find. If you want to achieve that a group of people should be official commenter and be paid for that since it is time consuming.

Your posts are as good as anyone else's and your comments way better than from the average commenter.