You are right, Inter dont need to help La Nazionale, because they are not Italian. Of course when the best team in Italy, Juventus was in a tough state, Italy NT struggled.
For idiots who say Italian clubs arent supposed to help Italy

then how is Italy going to get players then? Look at England and there EPL, they rely on foreigners and most people claim it as the "best league in the world" yet their NT has been shit for years. Why? lack of players!
If Italian teams are not going to provide players to the NT, where will they get the players? The wider the national pool is, the higher chance of success.
Btw, I didn't mean that since a player is Italian he is better. I just meant that whenevr there is a foreigner and an Italian, and if they are equal in terms of assesment, I'd always take the Italian.
Juventus is an Italian club so the core must always remain Italian. Like we have with Alex, Gigi, Chiellini, and Marchisio.