You have to search to find region free DVD players. The average Brand name DVD player is not region free nor can most be made that way.
Regions is how the content providers control when and where a video release can be used. For example this is how the drive in my Lenovo is set. Notice 5 changes left. If I use the PowerDVD that comes with the computer it will set the Region in the drive to the DVD I play.
The other problem is that commercial DVDs are also protected thus making it hard to play without using a legitimate player that respects region settings.
Is it really greed to want to protect your profits?