Remember back in the day it took a minimum of 5-6 months AFTER the film left theaters to even see VHS?
now, well in recent years, you can pretty much guarantee the blu ray is dropping 2 1/2 to 3 months from the theatrical release.
You guys say they are trying to sabotage Black Panther numbers? Remember at the end of the day Disney only cares about Green. Remember Infinity Wars? They have to make room for there next billion dollar franchise. They need as much theatre space for infinity wars. If Infinity wars was not coming out, Im pretty sure they would leave black panther in the theatres. Why would they not want to make money?
Also they have to push the DVD/Bluray while the movie still has hype, We live in a age where people have short attention span, So you have to strike while the iron is hot.