Thanks for your post.
I will be doing a weekly Statistics Posts like this one every Saturday,
https://steemit.com/steemit/@hisnameisolllie/steemit-statistics-new-and-improved-weekly-edition
I will add in something a little more comprehensive than the current % of Steem Power the Top 10 Accounts Control: 79%. But I will be tracking everything over time, so we can build up a picture of which way these measures are moving. The aim of Steem is to become a stable currency, and to do this you need distribution. This has been built into the founders model, so I assume that we will see this distribution widening, and become less top heavy over time.
Also, the top 10 accounts will likely not be the 'Best' Contributors to the platform. It's up the the users to perform better in terms of Curation and Creation to slowly redistribute the 10% MCap reward system each year in their favour...