As great as it could be to get these sets in the US I do not think it is very cost effective.
The truck is listed as 60 euros or $77. Shipping would easily be an additional $25+. I would not buy it for $100+ when you could get an RC train for the same price.
The animal set is listed at 55 euros or $71 and again for a big set with shipping it would be around $100 total.
Why not just release them in the US? its not an exclusive or has some special organization print on it. Why not open up the market and sell more of them? There has to be some business logic to it? If only the PCC would answer questions like these.