We could go higher in price but unexpected events won't allow us to. Look what happened to the price now. It went down more than 13% just after South Korea is starting to impose a ban and police raiding exchanges. The South Koreans are not sure what to do and are now panic selling their coins!
that is why these altcoins have been getting pumped. because bitcoin fees are high and at the same time these altcoins have been "advertised to have low fees" and they used to have low fees.
ETH fees have been rising and they go very high whenever there is some activity on chain like some ICO or like the cryptokitties!
LTC fees are also moderately higher than what was promised.
and
XRP is a centralized token anyways so who cares 
XRP is just shit. People are joining in out of hype. They don't even what Ripple is all about. They are thinking that the banks will be using the coins but they don't know that they will be using the technology not the coins.