Why do you have any suspicion about that?That bitcoin loose his throne.No never.With the history,and strong foundation that bitcoin have today.Any crypto currency can't over thrown the bitcoin.
1. Bitcoin Has the Most Hash Power that comes to 24.29 EH/s
2. Bitcoin's Brand Recognition
3. Bitcoin is Widely Available
4. Bitcoin is the Industry Standard
5. Bitcoin Has High Demand and Low Supply

all of these makes bitcoin most powerful crypto-currency.King will remain until the blockchain remains.
Source - https://steemit.com/bitcoin/@davidhay/5-reasons-why-bitcoin-is-king-cryptocurrency