I think it is hard to know how these decisions "could" play out if a different path is taken.
On the one hand, making an Italian tank in resin certainly turns away people who would have gone for a kit in plastic. But that still leaves you with people who want that tank, and how badly do they want it? Enough to get it in resin? Or will they wait? And because some sales will be made in resin, does that lower the potential market later for a plastic kit?
I am still happy to see Rubicon get behind the Italian forces, anc come out with something, even if it is resin. I would definitely get one in plastic, and replace my resin Warlord kit. But it would need to be a HUGE improvement over my Warlord version to replace one resin with a different resin.