You may want to take a look at Italy's recent changes in legislation around VPNs tl;dr Italy's government has an anti-piracy measure called Piracy Shield which is a list that needs to be blocked by ISPs, VPN providers etc but is entirely arbitrary with no governance.
Air has stopped onboarding Italian customers but you may want to consider given they're based in Italy, if this compromises your use case/opsec
They'll never replace PLB/EPIRBs unless they bake in 406Mhz and 121.5Mhz communication. Satellite devices aren't reliable enough for SAR. I'd even argue that they won't replace Satellite Communicators - battery life isn't good enough and the connection stability isn't good enough