For me the ball related to the small classes is on the national ASN side. If I say it cynically why shall FIA care about cars which are basically irrelevant for FIA championships? It doesn't make sense to pretend it's not like that. Naturally they don't put much emphasis on something which doesn't compete in FIA championships anyway and which is not interesting for the manufacturers at the same time.

In most of the countries you can build small cars on local private basis according to the ASN rules. The reason why there is so few R1 cars available is IMHO in the fact that they aren't actually needed. Nobody competes with these small cars internationally.