Should Disney shows get more seasons?

Hey, I'm back with a new topic to talk about. This may be short, depending on how much I typed. Alright, so many of us have been watching Disney Channel and, I was always wondering why shows like Hannah Montana, That's so Raven, Lizzie McGuire and some other shows that were on Disney only have 3 or 4 seasons. Everyone seems to be enjoying these shows. Back then, Disney used to have really good shows like Even Stevens, there's Phil of the Future. And they have like about 65 limits of episodes back then, but now, they go up to 100 episodes. I was always wondering....Should Disney allow these shows to get more than 3 or 4 seasons like how Nickelodeon does? I know most of the Disney shows already ended, the cast wants to move on or something, but it'll be nice to have more seasons, because most of us enjoy the good shows. What do you think?