It's definitely not my experience that "most" Coursera courses do this.
Of my 12 completed classes, only one does not allow access to the videos. Some of these classes are 2 years old. The one that doesn't have the old videos sent out an email saying they were removing them when they re-ran the class with new videos a year later.
Of my 12 completed classes, only one does not allow access to the videos. Some of these classes are 2 years old. The one that doesn't have the old videos sent out an email saying they were removing them when they re-ran the class with new videos a year later.