The article actually mentions this (and an Israeli defense contractor is a one of the few that's lobbying for it.) I think the key difference, from my understanding, is that it has never been deployed onto a convoy. Also the "Iron Curtain" relies on the projectiles being lobbed instead of shot directly, since the people shooting those projectiles into Israel don't care who they hit military or civilian. It has been interesting watching defense move along, from the Patriot missile program, to the Iron Curtain, and now something that is mobile and can take on smaller projectiles.
I think you are confusing Iron Curtain with Iron Dome. Iron Dome is the area anti rocket / mortar (lobbed) system. Iron Curtain is a system that protects individual vehicles from "shot directly" projectiles like RPGs.
Being under constant threat helps to develop defensive technology. Israeli developers have very tight feedback loops. And they see first hand what happens when they fail.
>to manage the Palestinian population in Gaza and the West Bank
>manage the Palestinian population
Not sure if that euphemism is beautiful or really horrifying...
Iron Dome
There are two Israeli offers, one American and one German. That's just 50% subjugation of Palestinian territories. Get your facts straight.