As I said to the previous poster that's just semantics. Failing to maximise income has the same nett result as increased costs. By aggregating the costs over a larger number of tickets, they keep the cost per ticket lower.
This is not an issue of having travelled or not, and your conclusion to that effect is ridiculous. It's a question of basic economic principles. Yes, they do it to make more revenue, at a given ticket price, from the flight. This is not a mystery. Nor is there anything wrong with it because in the end, they will end up charging less per ticket than they otherwise would, which benefits all the passengers.
That's fine. It just means that in your country air tickets will cost a bit more. If this is deemed to be a worthwhile trade-off then that's great. For what it's worth I would probably agree with this approach. People are always happy to accept a discount for a low probability risk...until they land up being the statistical outlier. Then suddenly they change their tune and become all obnoxious and entitled (as happened here). That's just human nature. Sometimes it's better to simply never give people the option because even though they think they'd be better having the freedom to choose, in reality it just leads to misery.