yes, there will be impact, but no i am not that scared.
Just look at Sony, yes there i was scared,
why? The want to provide things for 3 (!) Systems and Mounts,
and i did died 2 times with that ...... i think they have to much todo, only the guys developing new camera bodies seem able to handle it.
But Fuji on the other side had done it well. Why? X-Mount Lenses are great - and there are plenty of it right now!
And, X-Mount will be the main thing for them ! of course we will see other lenses,
they can sell a lot more theren then with GFX.
GFX is to me more a think to see what they are capable todo, like a step into the formula one circus
I think the x mount will also profite from this step.
i really looking forward for the next years to come,
and i am proud that can be part of this.