This generates an environment that allows for certain things to happen. One is an area less prone to economic recessions, with higher wage equality and a more egalitarian and humanistic approach to business. On the negative side though there is an insidious xenophobia that permeates the area. Essentially a lot of the ads they run (for example for their supermarket brand Eroski) do so on a platform of "its better because its basque". Like basque cows, basque cheese etc. Many of our companies brag about "we only hire local people", so music festivals for example have all the staff hired locally rather than having an open hiring process or allowing bands to bring their staff.
This is a bit of a double edged sword where we are creating a bit of a local maximum for the basque country economy at the expense of a worse average for everyone else (assuming market conditions can create Nash equilibriums). Now I do believe Mondragon has done some fantastic stuff, but they are not without a fault and they also exist thanks to an environment that allows such conditions to exist and do the work they do.