Now I got your point concerning the dependence. That was not clear to me before you elaborated and I don't see how I could have inferred that.

It is highly unlikely though that this integration into a game engine made any significant revenue in its 3 years of existence if you ask me. The integration is also still available, just not distributed via Unity store.

As VideoLan is a non-profit I tried to find info on their income to get a bigger picture, but failed to find that.

This is a matter of how someone might interpret "depends".

If you meant "effectively will cease to exist", that is incorrect.

If you meant that VideoLAN depends on Unity the same way I depend on the 5 dollars in my pocket to be fungible...VideoLAN still exists without Unity, same as I exist without the 5 dollars in my pocket.

There's nothing more to it, afaik.