And yet why the asymmetry? If the capitalist present is empty for all but the elite, why a swing to the right, rather than the left?
Partly, because stepping to the left is stepping into a "void" -- that space from which people could work together to build their lives. Key concepts here being work and consciousness. This is the greatest drawback to radical politics, that it requires that we all face the fact that we're making it up as we go along and that we have the courage to do that.
The advantage of the right/fundamentalisms, is that it promises to restore the bond of human social and kinship relations, which capitalism has broken, with the glue of religion. Unfortunately, that glue is dissolved by (capitalist) economic relations--but if you don't look too deeply, you don't see that. Fundamentalism also relieves people of the burden of freedom (a great burden for many) and it is also, compared to any leftward trends, very well subsidized both economically and politically.
Compared to the heartless void of capitalist culture, Islam burn bright; but it is at best a fairy tale and at worst just another shackle.
Joanna