Well here's what happened in my case with Power Rangers -
I didn't have cable until Mystic Force in 2006.
Lost cable in 2010 during Samurai Part 1
2 years later in 2012 this happened -
Shout Factory got release rights MMPR - RPM so I bought the 4 mega sets. Then Lionsgate had gotten Samurai - Super Ninja Steel.
So I got to see MMPR - Super Ninja Steel on DVD.
When that first boxed set dropped I was like "Holy bollocks - They're doing this. Power Rangers on DVD."
So I got the sets over 2 years.