Exactly. A business migration to an "offshore, sovereign nation" might seem like the best solution here, but it's just a hammer putting an angle to the nail.
Sure, (Corporation, et al) Taxes might be lower elsewhere, but the proposed unregulated, dynamic blacklist system being implemented in Italy, applies globally to AirVPN's and all Italian resident-customers.
If AirVPN were to still be a registered Italian business, and somehow implement technological bypasses of the blacklist to reallow Italian resident-customers, then even a layman could see an argument for detrimental culpability subject to their own business registation laws, if they wish to continue operating out of Italian jurisdiction.
I'm certain that the Owners, Staff, Lawyers of AirVPN, being at least of Italian business registration since inception, are taking this legislative battle to heart.
Many others will too: I'd bet there'll be an EU review into the frameworks implementation sooner rather than later, once it's filtering impact and resonance are actualised. @Staff Will do whatever they feel is most legal, and best feasible. But there's one reason why we're customers:
A "VPN operated by activists in defense of net neutrality, privacy and against censorship."
That time is now.