Yes and no. To the degree that capitalism is about efficiency by means of competitive markets, net neutrality is no more "anti-capitalist" than, e.g. requiring

Yes and no. To the degree that capitalism is about efficiency by means of competitive markets, net neutrality is no more "anti-capitalist" than, e.g. requiring all drugs to be tested for efficacy. To the degree that capitalism is about blind accumulation of capital, then net neutrality is anti-capitalist. You could consider Government as the solution to the problem of natural monopolies.