by necessity and definition, the world must operate under someone’s social model
I disagree. The world could operate under a model shaped by the continuous contributions of everyone, without anyone necessarily imposing or convincing others to adopt their particular model. A model that could evolve as people independently decide what’s best for them in relation to everything.
As for capitalism… some countries have “being a welfare state” encoded in their constitution, above being capitalist. It may not be a full departure from capitalism (which doesn’t seem like what people want anyway), but some countries have implemented it to a decent degree.