This is probably an unpopular opinion, but I don't care about creating businesses that last 1000 years.
I have no idea what 100 years from now is going to look like, much less 1000 years.
That isn't to say that I am looking for 1 year, in and out, flip acquisition companies but optimizing for the "way way after I'm dead" timeline is equally ludicrous to me.
I care most about whats going to happen in my human lifetime. If I can create something that persists 1000 years, great, but that's not really important to me.