maybe with the presence of libra most people can't invest in altcoins and move their assets to bitcoin which will definitely be strong to survive with the arrival of libra, then the bitcoin marketcap is up to 60%. in my opinion the arrival of Libra is still speculative and can bring something big.
Bitcoin will not be displaced by any coin, that's my belief. Because the capitalization of majority trade is accumulated in bitcoin. Even though Facebook issued Libra Coin, it has not been proven in trade.
Facebook's big name cannot be a guarantee that the coins will be sold and exploded in the crypto trading center as predicted by many observers. The truth will prove it later.