I know that I'm basically being trollbait (around here), by saying this, but I personally believe that the very existence of an "exit plan" is a problem.

A business is supposed to be an ongoing, perpetual enterprise. Maybe it grows, maybe it stays the same, but it isn't something that should (in my opinion) be designed as a product, in itself, with a "sell by" date. If it gets brought up, then that's [maybe] good, but it shouldn't actually be in the business plan. It's just a random lifecycle event. We can plan to be ready for it, but it shouldn't be a corporate goal.

It's quite possible to do that. I worked for nearly 27 years, for a company that is over 100 years old. I think the world's oldest company is over 1,400 years old, and just got brought out, for the first time, about 10 years ago.