[jiiam]

> Both openvpn and wireguard protocols are trivially blocked by DPI.

I don't understand why this matters, it's not like your ISP will ever block this kind of traffic since every company that has any form of IT department uses some form of VPN making it not only a legitimate kind of traffic but also quite common.

[npteljes]

I'd think that companies use commercial grade internet, and normal people use residential internet. If so, then it would be easy to imagine that the ISP blocks some features for the residential subscriptions.

[RAM-bunctious]

Most companies certainly won't be using "commercial grade internet" in the way that term is usually used. That would usually be reserved for large enterprises, which really only covers a small part of the workforce in practice.

Many businesses don't bother even subscribing to a business package, because something like a static IP is unnecessary for them.

Further, the point regarding VPNs still stands -- think of the chaos it would cause for many people working from home (on residential connections). And that's just one example.

I don't find it plausible for an ISP to block this.