@fansy,
Not necessarily. As with you last question (about skewed incentives), it can only be answered if one is the author and therefore knows what he or she means, or if you provide more context. You frequently ask questions about terms for which there is insufficient context to give you a coherent answer.
Illiberal has a more specific meaning than liberal does. Liberal is a term which can mean many things, especially in political terms. Illiberal, however, has no specific political or economic meaning, and can only be an economic term if it is used to modify an economic substantive or phrase.
Before it became a political term, liberal simply meant having the attributes of a free man--being generous, or open-minded. Therefore, illiberal means narrow-minded, or stingy, or ungenerous.
So, once again, unless you provide more context, it is impossible to know what, precisely, the author means. However, i doubt that this can be considered a "newly coined economic term."