If Madden on PC sold great and made them a lot of money they'd still be making it on pc.
Again theres a reason they dont any longer. It could be also that they make a ton more (which I guarantee they do) focusing on consoles. Even with that , if the pc sales were substantial theyd still make it.
This is EA you know, they'll try and make a buck any way they can. They simply didnt stop producing pc versions if they were in fact making money on them.