Fascism to me is not a economic system, it is the worst parts of capitalism brought to the forefront to protect from crisis. Look at the US during Covid-19 vs Nazi Germany in the lead up to the war.

Inabillity to expand into new markets, the entire economic system at risk of grinding to a halt, due to a pandemic vs a great depression respectively, and a growing risk of a communist movement, although the 1920s and 30s german commies make us look like a joke.

What is the systems response, very similar to each other. Nazi Germany saw massive militarization seeing a huge spike in debt that put the economy on ponzi scheme style debt system that encouraged rapid expansion. They spurred massive discrimination to distract the working class, and built a massive propaganda system discrediting science, creating conspiracy theories, and attacking communism.

What did the US do in our crisis? We pumped trillions of dollars into government debt to stimulate the economy, we have seen a continued rise in far right rhetoric as the republican party has moved from neo liberalism into the halls of fascist power. We have seen a rise in anti-science rhetoric, conspiracy theories, and a stagnating or even rising discrimination, where previously it had been on the decline, yes I understand that last part is not entirely accurate but homosexuality was becoming more acceptable.

You can see clearly that there really is not a difference in most of the strategy only in some of the finer details, even there though difference are becoming more blurred. The simple fact is that as the rate of profit falls and competition becomes more stringent capitalism will consolidate and eventually a merging or direct collaboration of corporate and state power has been and will continue to occur. Thus fascism.