For home internet, one typically pays around $59. Mobile is around $15-$20 to get 5GB which i expect sufficient for most people.
Nowdays you can get crazy data on mobile plan for $30-$50. This might be faster for some people as well.
So, potentially, you can just connect to your hotspot and not get separate internet.
I was wondering on how many people do that? Also, does it work to stream netflix on their tv as well?
Do you live alone? In my household of 4, we use just under 500GB/month of data. I know because I am signed up for 500GB data, and I get the 80% quota reached with a few days left in the monthly cycle. Sometimes more if the month has school holidays in it.