I just want to state that I'm not trying to be argumentative just to be argumentative (or whatever phrase0.

I've come into all the countries multiple times on one way without an issue.

Any flavor or combination of refundable is much more expensive than buying two one ways.

People violate the below stated Contract of Carriage all the time. Two wrongs don't make a right ... .

In my imagined scheme I am going to buy a round trip ticket with a return date of the earliest possible return date. If I cannot make it I am going to cancel and buy another round trip ticket with the earliest possible return date. Lather, rinse, repeat.

Buying the cheapest fares, what should I do to stay in compliance of the Contract of Carriage if I cannot make the return flight? Just pay United more money?