I call shenanigans on this post. While you might be right, no one knows what any cryptocurrency will be worth tomorrow, let alone 5 years from now.
I think Steem is unique and can certainly be worth much more in the future but 5 years is a very long time when it comes to technological advancement.
There could be dozens, if not hundreds of Steem clones within 5 years and some of them might add more features and surpass Steem.
This is going based off of the worth of other companies compared to Steemits growth rate and value.