The cost of 1GB doesn't seem to take into account the entrance to having a line in the first place. I might not pay more than 1€ a GB but I still have to pay 10

The cost of 1GB doesn't seem to take into account the entrance to having a line in the first place. I might not pay more than 1€ a GB but I still have to pay 10€ to be on the network and I can't only buy 1GB, I have to buy 2, 10 or 50 or 100. The "base plan" is where the ISPs get you. That plus data is just the modern day rents for tech companies. It doesn't really make sense to compare data prices when the telecoms are charging varying entrance rates.