Free-market austrian school is generally "hands-off, believe the price system".

I've generally seen the "not enough" argument in conjunction with Keynesian "government stimulus" (e.g., google "not enough stimulus" and the first half-dozen articles arguing that the recent $700B + stimulus was not big enough).

I haven't seen a similar corpus of arguments that the freenmarkets haven't worked because they weren't free enough. I think the chinese experiment opening up to capitalism is a great endorsement of additional freeing of markets "at the margin" increasing economic benefit.