Martin Luther King has a dream too...so you are in good company.
I think you are correct....all I see here is the exponential aspect of things....linear is not part of this equation....
To many different ways to increase things...
And I do side with you on your dream. I do not believe that 100M users on the STEEM blockchain is an outrageous idea....
If @ned is right and he gets 100K entrepreneurs on here, how many people will that attract?
Besides we are getting close to 1% of the way there....8 more doublings and we are at your target.