Facebook won't be launching Libra as the group is going to rebrand to Diem and the target launch is next year (source)

Get a job and put your money where your mouth is. Buy bitcoin from your salary and trade. That way, you won't need to beg or talk about tips.

You've no idea how traders use stable coins as already pointed by @Jawhead999. They (27 firms) won't need the community to invest because it's not something that will pump in price. They only need them to use it just like how USDT, DAI, USDC, and other stable coins.