Remember, the whole wager program wont be fully implemented until late 2018, so this is a long term investment (kind of like Ether is). there are many things they have to work out. The biggest is getting the word out to potential bettors and the ease of buying wager coins. If those two items are met, this will be a success.
im sure big online betting sites will set up and use wager as their sport betting system, which will help a lot...
Not necessarily long term if people can sell right after the ICO. Its long term to get a positive ROI, but the price is not always decided by the use of it, but mostly by supply demand. So this might shot up right after the ICO.