if facebook, whatsapp or any other "powerful" multinational company creates a cryptocurrency, you lose the sense of decentralization with which BTC was born and the fantastic world of critpovalutes. then you need to understand what kind of algorithm they want to adopt, whether it will be a coin PoW, PoS or other. I remain very skeptical for now
Facebook is one of the example of a powerful company, if they could run their own coin by next year, then ill expect something better,and the price of course could be higher, but if they could run their own stablecoin, maybe its just the same with the others too.