I know they stopped adding new content to the Store, but the same stuff has been on sale for months. If they can change the Daily Deal every two hours, why can't they rotate the sales?

They don't change the Daily Deal either. It's been the same rotation since September 2014.
But according to the official forums the Sales not changing is actually a mistake: http://forums.thesims.com/en_US/dis...-september-list

And they didn't do anything about that?

There's so much in the Daily Deal that it seems much different. I know I saw a post about knowing when things were going to be up, but I thought that meant there was a schedule somewhere. They at least have a LOT of stuff in it.

Why wouldn't they get on the sales if they've known it's an issue for years?

So that's why those last few things I would like never come up...I didn't know this. I did get bored of looking to see if the things I wanted ever came up.

It's simple. EA has officially stopped giving a shit.