Steem will have a certain future as long as it is intelligent community backed. Whales come and go, community is here to stay and help Steem's rise and I don't see it go down anytime soon. Not in the sense of price but in it's social value and social media sense.

As of Bitcoin. Well, the king will always be the king. It's pulling up all the other cryptos, hope it doesn't eat them and die in the future.