Why? When you went to see it in theaters they always had promo givaways and if they had put pokemon movie 9 in then you would have got a promo manaphy as well as other pokemon that stared in the movie like they did with pokemon the first movie. They gave away pikachu dragonite 2 mewtwo's and electabuzz. I think it would be a good isea to bring that back because it was awesome.
My guess is that they are doing because they think it won't pull in a big enough crowd like with the FMA movie in Arizona. They didn't release it because they "thought" people wouldn't come and see it.
I think no when I went to the theater in my country the pokemon third movie didn,t stay long in the theater and it is very hard finding a movie in dvd I have only seen up to the celebi movie and a bit of jirachi and deoxis movie