Well, looking at the wiki entry on Mondragon, it says wrt wages that:
In general, wages at Mondragon, as compared to similar jobs in local industries, are 30% or less at the management levels and equivalent at the middle management, technical and professional levels. As a result, Mondragon worker-owners at the lower wage levels earn an average of 13% higher wages than workers in similar businesses.
Also, all workers actively participate in decision-making.
In that same wiki article, Chomsky is quoted as saying:
It’s worker owned, it’s not
worker managed, although the management does come from the workforce often, but it’s in a market system and they still exploit workers in South America, and they do things that are harmful to the society as a whole and they have no choice. If you’re in a system where you must make profit in order to survive, you're compelled to ignore negative externalities fixed on others.
Which is certainly true. And John Lewis in the UK, a rather less cooperative structure than Mondragon, also exemplifies this. And yet, workers at these places, even though they are operating in competition with non-coops, are significantly better off and have significantly greater say over what happens in the workplace. Even where they are operating in competition with shareholder-owned businesses, they constitute a concrete improvement on those businesses.
I would argue that the more coops there are, the greater the scope there will be to advance non-exploitative practices. Where all businesses are coops, they will on average all be more cooperative, basically.
My other main point would be that whatever change you advocate, you have to be able to indicate a way to get there from here. I think I can do that wrt 'market socialism'. I'm not at all clear how those who advocate the complete transcendence of value production propose to get there from here.
One thing I disagree with Chomsky about is the necessity for a coop to make a profit to survive. It must make a profit to
expand, but it can survive merely by breaking even. That is a difference. Within a capitalist system, businesses that merely break even are closed down. Within a cooperative system, businesses that merely break even have no reason to close down. In fact, given that there is no external capitalist to pay those profits to, a coop doesn't really make profits at all. Ultimately, if it does well in the marketplace, that results in its workers getting richer or it taking on more workers or both. A coop does not operate to the same profit motive as capitalist businesses.
To take the example of John Lewis, its constitution states that it must pay 50% of its profits to its workers in bonuses and that the other 50% must be reinvested in the business
in ways that will benefit the workers. Not a penny of those 'profits' leaves the business, and the business is worker-owned. It's really not the same thing as the profit of a capitalist business at all.