Every time someone sells on an exchange, someone else is buying. People have this theory that there is no btc. If there aren't, then who are people selling to?   

There is plenty of btc out there to invest in Rise if investors want to. Rise is doing really well.

When everyone invests in a coin such as Waves then it sort of becomes saturated. With something like Rise, there is so much potential for growth. You'll probably see a much larger ROI in Rise than in Waves. But it also depends on what can be delivered. I've been following Rise since day one and was the first to sign up for the sig campaign. I see a huge future with these guys and I'm glad to be a part of it.