Anderson seemed to want Amtrak to emulate all the worst aspects of air travel. So, I suppose we should be glad it's only a 20% forfeiture--the airlines have often enforced a 100% forfeiture for cancelled flights! Several years ago I missed a flight due to an accident that snarled traffic horribly on the highway to the airport, and at the ironically named 'help desk,' the staffer told me I'd lost the entire value of the ticket. I appealed to a supervisor, pointing out that the jackknifed semi actually made the local TV news, and got the "Well, just this one time, we'll see what we can do" response.
Buying refundable tickets as a matter of course runs into a lot of unnecessary expense, since most of the time I don't need to change or cancel the flight. But forfeiture for cancellation or missing a flight means losing the entire value of the ticket. So the airline gets you, coming and going. (Or coming and not going, as the case may be.)