It is neither. It is the bonkers political dream of providing a level playing field across a huge geographical area with a huge divergence in employment opportunity/unemployment levels/cost of living/wages. You surely can see why those in the UK (for instance) are pissed off at seeing their salary and terms and conditions eroded as our employers see a wave of potential resource at their disposal that are happy with salaries that won't cover the cost of keeping a roof over our heads. I talk not only of those from Eastern EU but the spotty kids whose mummy has plonked £100k on the table to get young James a glam job.