Rivalsa translates to "vindication" or "revenge." It's a strong and less common word that carries a significant emotional weight.
In the song, the artist sings, "Avevo fame di rivalsa in assistenza sociale" (I was hungry for vindication/revenge while on social assistance). This line powerfully conveys a past struggle and a deep desire to overcome adversity and prove oneself, making it a compelling and memorable word in the context of the song's narrative of rising from humble beginnings.
The album opens with someone asking Artie what he would do with three billion, and his answer sets up everything after it: "Tre miliardi io li spendo per far una bella vita e non per far la guerra" (Three billion, I'd spend it on living the good life and not on making war). Then he cuts the fantasy off himself. "I fiori? Ah, tu pensavi che ci divertissimo qua, e invece no" (Flowers? Ah, you thought we were having fun here, but no). What follows is the price list. He was on welfare and hungry for payback, he stood on a corner that now belongs to him, and Milan changed around him while he was changing too. The chorus is an inventory read out flat: dice, guns, fast cars, watches, a pool.
The second half is where it gets good, because the beautiful life turns out to be thirty degrees in the shade with the blinds down and warm beer. "Ronzan le zanzare, qui puoi soltanto annoiarti" (The mosquitoes are buzzing, here you can only get bored) is an odd line for a rap song about winning, and he means it. The best image comes near the end: "Mi credevo in alto, ero al terzo piano" (I thought I was high up, I was on the third floor), followed by "Poi ho visto il tredicesimo, guardavo in basso" (Then I saw the thirteenth, I was looking down). He signs off saying he would swap a couple of things for the success, which is blunter than most people manage on an intro track.