How so?
I've always been a supporter of a hypothetical Etruscan unification of Italy, on the other hand, but they lacked the administrative efficiency and the military prowess of Rome. And, unifying the Etruscan city-states (that, at their height, had a sphere of influence covering most of the peninsula) would've been far harder than unifying the Latin city-states, that were all situated in and around Latium Vetus.
However, since Rome was perhaps the most Etruscan of the Latin city-states (with legendary kings and Republican gentes having Etruscan roots) it wouldn't be that hard for Rome to become a fully Etruscan city while retaining its administrative and military genius - that was mostly born out of a pragmatic tendency to co-opt whatever institutions and inventions their enemies had, that were recognized as better than Rome's own, anyway.
Even then, I doubt an Etruscan Italy would expand as much as Roman Italy did, they'd probably be content with exerting their influence over the northwestern Mediterranean alone, as they would've been the most developed civilization in Western Europe by far - Carthage, Egypt and Macedon would've taken the remaining corners of the Mediterranean for themselves.
There are parallels between the rivalry between the Italics and the Etruscans/Rhaetians with the Chinese States and the Chu Kingdom.