My impression ist that people are talking about sacrifices for the sake of sacrafices and not to solve the problem. If the global warming (and related problems) would be (magically) solved tomorrow, they would be disappointed because no sacrifices were needed any more.
Are sacrifices even enough to solve global warming?
And sacrifices have a marketing problem. It's hard to sell them to billions of people.
Europe seems to be more in tune with top-down. In the US, bottoms-up seems to be the only option. Once people change their purchasing decisions - e.g. stop buying anything that comes in individual plastic packing etc, companies will be forced to make changes. Another example - stop giving non-sensical loot bags in b'day parties or stop taking or giving gifts altogether.
The other overlooked fact is that the greenhouse gases stay in the atmosphere for a long long time. So, once the climate changes it won’t be a 1-day/1-week or a 1-year event. We talk a lot of geo-engineering etc.. but why not make small sacrifices now (eat less meat, buy local and used stuff, no single use plastic, less air-travel etc..) and save the beautiful planet that we already have. Yes, it will cause some economic dislocations but we will be fine. Companies will adapt or healthy and environment friendly alternatives will come up.
Take this seriously folks. We don’t have another planet to go to and our children are counting on us.