Please produce your evidence that Mussolini's ascent or style of government was a "society ruled or controlled by people of great wealth", as defined by Wikipedia.
Fascist political philosophy is about racial purity, militarism, autarky, and suppression of dissent through political violence. In fact, one of their methods of enacting such worldview was by appropriating the wealth of rich people to advance their own purposes.
If you read your link, you will discover it's not focused at Mussolini's fascism at all, but still talks about the merge of the government and corporations... Because it's a very important feature of that regime.
I'm referring to how both Lütke and DHH, a Shopify board member, have fascist politics.
The word does have meaning. But underlying that meaning is a philosophy that there is an in group that should have power and many out groups from which power should be stripped. There is a long history of industrial leaders supporting fascist ideology.
Yeah, but please google first on what Mussolini preached. State-owned corporazioni are nothing like privately operated businesses of today. Don’t hang on the word. The correct word you are looking for is plutocrat, indeed.