btc will still remain a king of crypto for sure
Not sure about it. The Bitcoin dominance in the crypto-currency market is at all-time low, at around 35% (compared to 61% a few months earlier, and 90% two years back). BTC is now facing a lot of competition, and the threat is not just coming from alts such as XRP and ETH, but also from the forked coins such as Bitcoin Cash and Bitcoin Gold.