I don't think that its the number of foals that is critical even though we can't race without them. It has become obvious that there just isn't anyone wanting to buy them. Especially if they are by a second trier sire.
I put a lot of this down to the fact that the top professional trainers are reaching every track in their state bar the most isolated & therefore a second tier horse is of no value. I don't know how they are going to address it.