I can't imagine that the "powers that be" in the NEW, yuppified Portland will want a dirty, smokey old steam train puffing along their waterfront paradise.
My BET is that sooner or later, MNG will get their "walking papers" handed to them in one form or another.
Unfortunately, as with every enterprise, if you don't own / control your real estate, you are at the whim of the people / agency that DOES own it.
It's sad to realize after so much time, money and sweat has been expended by so many.
Richard