Isn't AT&T/T-Mo a DoJ effort, not the FTC? I don't see the FTC's involvement in your links... were they cooperating behind the scenes somehow?

The Sprint one was also DoJ, according to the wiki.

I get that the FTC on paper is supposed to enforce things like that, but their track record doesn't seem great. It just feels like a zombie agency that used to have teeth a long time ago...

Edit: I guess they've been squabbling for a while: https://www.cnbc.com/2019/09/18/the-ftc-and-doj-are-squabbli... but maybe are trying to work it out? https://www.ftc.gov/news-events/news/press-releases/2022/01/...

Then probably the next Republican president will come along and just got both their efforts all over again...