Libra has raised fears about the future of blockchain mainly because it goes against everything the community wants and believes in: decentralization.
Facebook could ultimately create a massive closed-loop revenue model from ads, digital marketplace, to payments. Do consumers want to bet on the status quo of existing monoliths?
https://elixxir.io/blog/is-libra-the-future-anyone-wants There's been a lot of speculations about Libra Coin on what and what not it can do to the industry, I'm not a big fan of those Facebook projects, there's a lot of advantages and disadvantages on their project, but we need to see first what will weigh the advantages or disadvantages and we will only know this after Libra Coin launch.