That's a darn good summary of the use case for STEEM and SBDs as currency. There already is an embryonic Steemconomy and donation drives, and the Steemit blockchain supports it all while using only 1% of capacity.
Despite bitcoin being popular as form of payment in stores around the world, the reality is that the transaction cost, speed and ease of use prevents it from being used as a transaction medium.
That's precisely why DeCentral has deprecated crypto-commerce to low priority. (They make the Jaxx wallet.)
the key is the less than 1% of the capacity of the current bandwidth is used! The ability to scale is there and it just needs more time to grow into something far bigger than we can grasp at this point.