Other than 2 big spikes (to 10,000 sat in fall 2013 and to 7,000 sat in early 2015)... XRP has been mired around 1000 sat. Even with the recent spike, XRP is trading at 20% of the average price in 2013. So it's just a network token.
STEEM is different since Dan has clearly stated his goal is to build a "currency"... and build useful services a top of that currency.
RE: How Steemit could learn from Ripple's funding strategy