I doubt it will be a failure considering how many big names they have behind and even if they didn't, it's fricking facebook. Their stocks already reacted really positively to it, 10% gains in 3 days and how are they going to fail anyways? A lot of noobs will certainly use it and buy it even if they don't know anything about cryptos.
Anil Ambani was 6th richest man in 2008. Few months back, Mukesh Ambani paid $80 million so that Anil Ambani does not go to jail for non-payment.