They are good for one thing, hating other people.

In tough times people turn to strongmen.

Because they promise easy solutions to impossible problems, promise to push the pain and hardship onto someone else, promise to make life easier and simpler and to chase away all the things that make it difficult.

The fact they do the opposite doesn't matter

Bc the only outride the status quo options the wealth-controlled media will promote as viable is the far right.

The result of the rich owning all media, spreading misinformation to get even more tax cuts and subsidies. Right wing politics come in many flavors these days but they always favor the interest of some very wealthy groups and then distract the masses with more lies.

Those with wealth and power, have the wealth and power to get their message out more effectively. And push back against the message of those without wealth and power efficiently. We as a collective global society have decided to reward the most psychotic selfish monkeys among us. With a laser focus on brutally punishing the poor and disadvantaged. Even as we consistently give the wealthy gentle pats on the wrist, should they violate the public trust, laws, etc.

Every billionaire is a failure of government as are most multi-millionaires. Even as they wail and gnash at every minor setback properly functioning government gives them. Portraying functioning government as the failure. Combined with the fact that you have to be intelligent and articulate to convince others of your viewpoint. Any old thug can get people's support by threatening their life or livelihood, as the wealthy do. This is why as a species we will exterminate ourselves most likely.

They are very good for the economic elite and voted to power by idiots that think they'll reap a fraction of the benefits of the economic elite. Also bigots and extremists love the right wing because everything in society will get worse so more people will be uphappy which will in turn feed more xenophobia and more extremism.

Usual reason. Traditional parties for one reason or another get incompetent leaders unable to grow the economy and improve living standards, young people lose hope and stop joining the traditional parties, which means they have no new flux of talent, meaning things are ripe for populists to take over. Often times, one of the establishment parties positions itself in such a way it claims it is the final defence against populism, negating the traditional opposition (prime example: Macron). Most European countries have had a bad experience with communism more recently than with Nazis, which means the right wing parties tend to have an easier time as they are farther away from memory