I was having a conversation with a friend before lock down and she was saying that her and her partner have consciously decided to avoid flying. I pointed out t

I was having a conversation with a friend before lock down and she was saying that her and her partner have consciously decided to avoid flying. I pointed out that, while certainly agree it's a good thing to do, by not flying at the individual level you are only reducing the cost of flying at the margin. Where as regulatory and technical changes could change the impact across the whole industry.