The difference is, VPN providers, unlike ISPs normally don't have your home address and passport info[1]. Some don't have your name at all, unless your traffic leaks your identity - e.g. when you're paying for VPN service with Bitcoin. Even more, they're generally out of your jurisdiction, which acts as some barrier against frivolous requests.

_____

[1] In Russia every ISP is legally required to perform this sort of KYC and keep those records for a while.