Italy recently issued USD-denominated bonds, which are directly comparable, and the yields are much higher. The 30y ones are at 6.21% YTM now, vs 5.37% for US 30y Ts. For comparison, Alphabet borrows cheaper than Italy: 6.02% on 2060 maturities.
Tech in particular has an awful lot of churn. There's isn't a single tech company in the world that I'm highly confident will be reliably printing money 34 years from now.