Two points here.
First, a lot of European communication companies are either government controlled monopolies or directly government subsidized or owned. And we all know how well the European economic model is doing. So I'm not considering their pricing in a search to find a fair price.
Second, free market capitalism rewards more profit and punishes less profit. Therefore if you have a limited product or service the only way to make sure your not leaving money on the table is to raise the price until you can't sell the last unit or gigabyte. And that is the fair price.
This makes magic happen as new capital goes to the first person who presents business plan that can create the same product or gigabyte and can sell it for less and still make a satisfactory return on investment. And this means the fair price goes down. Which means it will be affordable to more people,which means more is produced increasing the the whole economy's gross national product.
Capitalism. I get choked up just writing about it.