So here is the solution. The Passenger Bill of Rights should say that if someone has a situation like this the airline owes them full refund. Trust me they would then do something about it. See my thread I had a similar experience.
No Very large people should not have to buy 2 tickets - that is too much. But there should be at least 4 special seats on an aircraft that travels long distance and it should cost at least 20% more and if those seats are full per flight, then very large people should have to book a different flight. People should have to declare their dimensions the way they do baggage weight. Why should a stranger passenger have to put up with discomfort? It is the responsibility of the airline to accommodate us all and appropriately.

If you read my thread our very large person took 30% of my partner's seat who in turn took 20% of mine and my partner ended up barfing all over me because of the cramped discomfort...no kidding.
Last edited by STORMCLOUD; Today at 02:22 AM. Reason: typo