Thanks for the invite.
I think Libra is "answering fire". Facebook ( as everybody else) saw the resilience of Bitcoin and the boom in blockchain now being augmented by cryptocurrencies. Slowly but surely cryptos were breaking through the "fences" which kept most of the internet users penned in. When nothing the hundreds of boffins at Facebook ( and Other Giants) did seemed to dent the growing blockchain nation, Libra was thrown at it. What damage it will do is still only speculation!