Li-Fi has already flopped. Even if it hadn't, it wouldn't have been marketed under that name.
The major advantages of Li-Fi were cost, lack of international regulation, and ease of consumer deployment when combined with technologies such as G.hn and HomePlug. Since its inception, the cost of Wi-Fi hardware has dropped and focus has shifted from powerline networking to 802.11s.
While Li-Fi + PLC sounds cool, in practice, it just didn't work. I've tested various PLC implementations and found that they rarely work well; they require perfect, brand-new wiring in the building and never deliver adequate throughput. 802.11s mesh networks work significantly better. And then there's the light issue: why use visible light that doesn't penetrate a coat pocket when you can use invisible light that does? Wi-Fi still uses light, just not visible light.