In the end, it would have made no difference which way Greece voted. The country is bankrupt, not only financially, but morally and politically. They are proof that you cannot go on spending more money than you take in. Greece is a manifestation that redistribution policies, whether from Socialism or an overly generous welfare state, do not work. No matter the form of government, its costs fall on the backs of the people. In a democracy, the people can vote for change, but when the majority receives more than they give, the end game heaves into sight.
The problem for the West with Greece is less the economic consequences, or even the ideological ones, than the geo-political changes that could evolve. Of particular concerns are the possibility of a return to authoritarianism – either from the right or the left – and, second, the relationship of Greece to Russia. Keep in mind; crises are not wasted by opportunists, and Putin is an opportunist.