How to deal with people who camp in titans?

Hi all, I’m posting this to ask for advice so please do not take this the wrong way, but I just got out of a match of attrition that was very frustrating because 4 out of the 5 people on the opposing team were sitting in the back of the map in their titans for most of the match, and whenever my teammates and i would try to get rid of them or force them to relocate we just get slammed by titan utility.

I’m just wondering what is the strategy to deal with these kinds of players? It feels almost impossible to counter/get them to move because every time a push is attempted we get shredded. They were using i think 2 Ions, a Northstar and a Monarch. The map was Black Water Canal if that helps.

I’m sorry if this comes off as rude or like I’m hating on the way others are playing the game, I’m really not, I just want to know what I can do to counter this if it happens again. It seems to happen pretty frequently these days especially playing with higher level players.