The reason is simple: Neither the center left nor the center right are delivering for the broad human populace. They both protect the ultra rich by not taxing them, which in turn creates a redistribution of wealth from the poor, the middle class AND the state to the ultra rich.
On a basal level, everyone understands that the economic status quo can not continue. Living standards continue to fall regardless of who is in power, and so it is inevitable that people will demand some sort of drastic change.
The loudest voice promising change is the alt right.
The second loudest voice is us, taxing the rich. It must be done, and we need to do all we can to become the loudest voice. We have several more years until the elections in eg. UK and Germany. Let’s do it. Let’s tax the rich.
https://m.youtube.com/watch?v=pUKaB4P5Qns&pp=0gcJCa0JAYcqIYzv
It’s oversimplified on purpose. The message needs to be crystal clear, and it needs to be repeated so often that no politician can go into a Talkshow without having to explain themselves why they are not taxing the rich.
This is the only way to make progress here as a society. You need broad support here.
Having said that, I actually, earnestly believe that taxing the rich is a prerequisite to
If you are curious to learn more how this is backed up by data, you can eg. read „toxisch reich“ by Sebastian Klein (unfortunately only available in German I think)