Freespace optical communication has been around for a long, long time. It's a problematic system to use in an atmosphere, since anything and everything can degrade the throughput. So, now we get to use a system the is horribly degraded whenever it's foggy, rains, or birds are flying around? No thank you.
Other systems have shown to achieve 10GB/s, so their test of 2GB/s isn't that revolutionary.
Let's stop the clickbait of *random famous company does something that other people have done before*.