First question, hopefully I don't mess this up.

I have recently registered some domains on the basically brand new .directory gTLD. Because of operating costs to maintain a gTLD, it is assumed that many of the hundreds being rolled out this year and next will fail. I will admit I am not very knowledgable on how the TLD process works.

What exactly does a new TLD failing mean? I realize that they lose ICANN accreditation, but does that just mean that they will be no longer be sold? If the .directory were to go under, would my .directory domains be affected? I bought it from domain registrar Gandi if that helps.