I signed up with XS4ALL last week. It wasn't the cheapest ISP in Amsterdam, but they have managed to stay true to their original "hacker culture". It's good to see that their owner KPN also tries to challenge this blockage.
When I lived with a former Airbus engineer, he explained that these systems were running 80486 processors due to their relability (in the sense that nothing unexplainable would ever happen). That being said, he also told stories of how the complexity caused software bugs to manifest themselves that often disappeared before their causes were determined.