I agree, $100 a month for data is not cheap, you have TMobile offering internet for $60, local companies offering it for $50 and big companies offering it for up to $80, total cost includes taxes and most always equipment. All of them over 100 Mbps. Of them all satellite will be the most weather dependent.
Time will tell but if you have none of the mentioned options, satellite is the only answer, with that said we are talking a small, very small part of the population, others will have many choices, choose is good. I think the cell companies are going to give everyone a run for their money.
As far as "market of cell phone" not sure what you mean? Home internet has come a long way and been around longer.