A few economists provide some serious answers to that question.
Economic historian Joachim Voth has a public finance story that is
purported to explain the claim for secession in Catalonia in “Want to know why
Catalans want to leave the loving embrace of Spain?”
Xavier Sala-i-Martin, at Columbia University, has also an interesting
story and mentions other work by fellow economists on the question of potential
viability of an independent Catalonia, here.
He concludes that:
“It has been argued that,
as time goes by, the desirability of having smaller nations increases. And the
economists who say so are not (I repeat, NOT) some crazy Catalan nationalists.
They are Harvard University professors Alberto Alesina, and Robert Barro and
Stanford University professor Romain Wacziarg. These economists have
demonstrated that the 20th century trends of increasing trade and
globalization explain empirically the increase in the number of countries that
we have witnessed during the second half of the century. The reason? The growth
in international trade and globalization makes it less desirable to belong to a
larger political union like Spain. As globalization progresses, the need of
one's industry to depend on a large local market is reduced. The gains from
being small, on the other hand, remain the same. Hence, the optimal size of a
country is reduced. Again, the scientists that say that are not radical catalan
independentists, they are Italian, American, and French professors from Harvard
and Stanford.”
A
question of optimal organization.
I agree with all the above. But the main
argument explaining the new independence movements gaining momentum in the past
few years is that the information revolution that has swept the world since the
mid 70s brought about an organizational revolution making smaller hierarchies more
efficient than larger ones.
This is because market exchanges, an alternative
to within-hierarchies exchanges, require a huge quantity of information while
hierarchies economize of information, as Ronald Coase explained a long time ago
(Coase, “The Nature of the Firm”, 1937).
It follows, as I demonstrated in my book “The Second Twentieth Century:
The Decline of Hierarchies and the Future of Nations” (Grasset 2000, and Hoover
Press 2006), that smaller firms and smaller nations are now more efficient
than larger ones (the “Coase-Rybczinski” theorem).
Globalization itself is an instance of expanding
markets that results from cheaper information costs. Transport costs did
diminish too, but not as much as information costs, so that the fall of the
latter has been of an order of magnitude larger than the fall of the former.
By this argument, one can better understand the
implications of the change for the relationship between regions, nations, and
the European Union. A standard argument in favor of a Federal Europe has been
that it would constitute a move towards a more decentralized political and
economic structure than the current national economies and polities on the
continent. Not so, because the building of a federal superstructure on top of the current national ones
would amount to an increase in centralization.
And the same factor that boosts regionalist
movements within existing nation-states, i.e. the growing abundance of
information, plays against the
building of a larger, continental, hierarchical structure such as the European
Union. A federal, integrated Europe, would thus contradict the decentralization
trend at work in the early XXIst century, and would contradict at the same time
the secession and independence trend that affects several European
nation-states, visible in Italy (the Northern League) and Belgium (between
Flemish and Wallon regions) as well in Great Britain (the movement in favor of
Scottish independence, and the Brexit movement as well).
Indeed we observe both that the European
integrative process has been stalling in the last decades, while regionalist
and secessionist movements have been on the rise. The recent economic crisis
still evolving after seven years (2008-2015) has boosted criticism of
established parties and existing national political-economic structures in
various European nation-states as well as in the centralized and would-be
hierarchical European Union, because they are now obsolete and inefficient in
organizational terms.
The bottom line is that fundamental economic and
organizational factors underlie the Catalonian independence movement and it
will intensify rather than disappear in the near future. A new democratic
fragmentation of the European space now appears likely.