In Italy, every coffee bar/cafe, has a different brand of coffee. Why? Because they get their dishware etc. sponsored by the brand. If you only drink a certain brand of coffee, then you have to drink at a certain cafe.
While coffee beans are not grown in Italy, the Italians are quite obsessed with coffee. But it’s not a fashion item. It’s more that they drink espressos all day long, at about a rate of one every few hours. It’s a social event as well so if someone says, “shall we have a coffee?” then they are inviting you to be sociable.
A “caffe” is by default an espresso. One way to tell if you have become a local is if the barista assumes that you mean an espresso when you order a “caffe” — rather than double checking with you that it’s an espresso that you want and not an “americano” (which is an espresso with hot water added).
I’ve had many awful cups of espresso here so far and some are okay ones. I prefer them without sugar so I can actually taste the coffee. Italians almost always add sugar. It’s like the equivalent of a Redbull. A shot of caffeine to get you through the next couple of hours. An espresso has half the caffeine of a cup of filtered drip coffee. The key is to drink the espresso quickly and chase it with a glass of water or a sweet baked item.
Coffee was introduced to Europe through Venice a few centuries ago and the oldest coffee shop, Cafe Florian, is still in business in Venice. The second oldest, Antico Cafe Greco, is in Rome, right by the Spanish Steps.
As for Starbucks, there is one in Milan. Or go to Seattle for them, and enjoy the many types of coffee in Italy when you are in Italy.