It happens all the time, if you look at the history of market cycles on the charts of these coins, you will see that as much as they bleed out, they can gain it back twice as quick when in position. The real key is not buying alts too early and trying to catch near the beginning of a market cycle and riding it up and selling it all back to BTC.. alts often are not in position, and the only way to capitalize on the gains usually is to actuallize profits back to BTC and let the alts go. Its just how its functioning right now since the market cap isn't growing but simply is moving around.