The Netherlands were early adopters of the internet and as such are a gateway to most traffic between Europe and the rest of the world.

This means a lot of companies are hosted out of the Netherlands including most of the VPNs but also a lot of tor nodes, its a convienence for them to plug directly in to the main transportation hub.

Most european data centers are in the Netherlands.

Also, because of EU privacy legislation a lot of US sites have chosen to block EU visitors, which lead to more VPN use

The Netherlands were early adopters of the internet and as such are a gateway to most traffic between Europe and the rest of the world.

This means a lot of companies are hosted out of the Netherlands including most of the VPNs but also a lot of tor nodes, its a convienence for them to plug directly in to the main transportation hub.

Most european data centers are in the Netherlands