Catalonia is Spain’s richest region, representing a fifth of the country’s GDP. The separatist parties aim to create a new mini-state, through which they can claw back taxes presently paid to central government, while establishing direct relations with the global banks, transnational corporations and the European Union. They hope to transform Catalonia into a low tax, free trade area based on stepped-up exploitation of the working class.
But nothing fundamental distinguishes Catalan separatism from similar separatist formations across Europe—the Scottish Nationalist Party in the UK, or those of an explicitly right-wing character such as Italy’s Northern League and Belgium’s Vlaams Belang.
The Balkanisation (Bantustanization?) of Spain—allowing global capital to pit workers against one another in a race to the bottom in terms of jobs, wages and conditions—would not be a “victory” for the working class or the poorer strata but a victory  for right-wing "nationalism".