Much like the mystery of the Electricity for your Italian home, is the internet service for your Italian home... And again, it seems to be system of brokers selling units from the pool of resources available.
You are not limited to some monopolistic vendor (or very short list of vendors) who has acquired the right to use the hard wires coming into your house or who have satellite hardware that is inoffensive to your HOA's peculiar sensibilities.
There is a long list of Internet service providers, including most mobile phone companies, who offer competitive plans and deals... and you are open to choose any one of these vendors. You are free to choose X mobile company for your phone, and Y mobile company for your home internet... and even if you choose a single provider, there seems to be no bundling... there MAY BE long term contracts depending upon how low the rate you score is.
I went into my phone provider to check the rates. The guy at the counter asked my address -- by this he can tell if I have fiber (fibre??) in my apartment building, which is used to determine your plan availability. I have fiber (which is apparently a good thing), and therefore a really nice plan was available to me (23 Euro per month, for enough juice to supply me with surfing and streaming aplenty).
The vendor will need to come to my house to "install" my internet -- basically a modem/router.... and this will take 10 days to 3 weeks to schedule. But in the interim, I can add on for 0 Euros "the little bar of soap", which is a portable hot spot billed against your internet service plan (not against your mobile phone plan).
Within a couple of hours (just waiting for the new customer batch process to cycle), I have internet in my house and in my purse.
My little bar of soap