For a year my family used 4G as our home internet (this was around 8 years ago). At the time it was incredibly expensive because you pay by the gig used, and the pay scale is built around using a couple of gigs. Watching a couple of episodes on netflix bumps you into a higher tier for the month. Downloading and then uploading a single 1GB artifact for work could bump you up 2 tiers. I've looked around a bit, and the situation doesn't look much better today; you can pay for a certain data cap, and then pay something like $10 / month / GB over that.