Well to be fair that's not Tony's fault, he doesn't own Y-MSF (so far as I know)... They apparently like to sculpt stuff up and never release it.

My guess is they're not making as much money as they hoped, they probably launched the company with grand intentions and had a huge wave of sculpting and prototyping, then the business never really took off and it wasn't financially prudent to release large numbers of the figures. I know there were several of the prototypes I saw that I would love to have figures of though.