Hmmm. So you're saying that phytopthora infestans was spontaneously created by an open market in goods and services - or, more succinctly, you're telling us that you're a complete idiot.
No, but the refusal to ‘intefere’ with the markets when the disaster happened and hoping that the simple expedient of abolishing the corn laws would drive down food prices and negate the effects of the shortage was woefully flawed. The government was more concerned with the consequences of artificially adjusting the price of food by purchasing and distributing aid than it was about ensuring that adequate supplies to ensure the survival of the distressed population.
This is to say nothing of the lack of decisive intervention in the years before the famine to wean the Irish off their over-reliance on the potato as a subsistence crop...