It's the equivalent of saying this system will still be here in 2059. Most JWs would scoff at this idea.
I'll be 75 years old. If i'm still alive i'll be looking for some JWs in their carts asking why the big A hasn't come.
It's a real shame that Witnesses in 2059 will be just as in denial about what is being said today as Witnesses today are about 1975, and Witnesses of the 1970s were about the 1940s, and Witnesses of the 1940s were about 1925, and Witnesses of 1925 were about 1914, and Witnesses of 1914 were about 1874.
It's a religion of denial, and they feel clever when they blame earlier Witnesses for 'misunderstanding,' or being 'overzealous,' as if it was just a few followers that were not following the Organization carefully enough.
However, as time goes on a little bit of reality seeps in between the cracks of denial and a few awaken. Hopefully by 2059 many will be awake.