current beneficiaries

I think the main problem is that this isn't just the owners of some corporation but also the average citizen.

it's objectively a downgrade if you don't have the option to fly for holiday and see other cultures every year. It's definitely a downgrade to have to adhere to train-schedules instead of just hopping into your car.

the problem is always "why should I do it if others don't" and then nothing moves - and since it looks to politicians as if noone wants to do anything they don't implement measures...

solar powered flight won't happen as batteries are too heavy - that's imho the main-thing we should use hydrogen for (other than perhaps chemical/steel-companies)

beef is never a good option because of the amount of food you need to even get to the end-product - it's just too inefficient. And in a world where we already destroy enough species by climate change we will need to cut down on chemicals to kill the few insects that are left and in result the birds that rely on them and do even worse damage to the ecosystem that we can't even comprehend. but if we don't use chemicals to kill insects we will need more space to grow the same amount of food and we just don't have the luxury of using that to feed cows in order to get to meat.

not to mention that "locally sourced beef" won't help if it's food is soy coming from a farm that was rainforrest 5 years ago

it's just a huge prisoner's dilemma and noone wants to be the first person or the first country to move out of fear that others might exploit that. I mean you have people online telling everyone stating that they are vegan for the climate that they'll eat twice as much meat now just to make up for it - or people flying multiple times a year since they just don't care. Social responsibility never will work on it's own but without it there won't be any laws...