For whom are you speaking? It certainly isn't me. My phone plan shares 3 lines on a single 2gb of data/month. I'd have to pay more for even the current base plan, but I don't feel like it. This is because the mobile experience is worse in almost every way.

But that's a moot point, because advertisers will still track you on any device you use.

Fun fact, generalisations can still exist even if they don't 100% apply to literally everybody.