This is just false. There’s no interpretation of ‘communist economies’ that applies to any fascist state ever. Two of the core characteristics of fascism are anti-liberalism and anti-Marxism, which covers basically all socialism. Fascist leaders (even the national-syndicalism types like Mussolini) have an odd relationship with capitalism, but ultimately I don’t believe they moved towards socialism either.
Historically, more fascist governments have developed from socialist nations than capitalist.
Apart from Francoist Spain, I can’t think of a single example of a fascist government which succeeded a socialist government.