"Can you imagine if you went to MacDonalds or Subway and suddenly they said "That will be $30 for that meal" (yes, McD's costs about 8 bucks in Canada, 10 with tax), oh and I see you haven't been to MacDonald's for more than a month, so you're going to need to go over there and fill in some e-forms to re-instate your service status with us."
That is apples to oranges.
You go into McDonalds for a meal that you will eat once and it is gone. McDonalds staff do not have to support you or your digestive issues you may have from eating too much later at home over the phone. Unless they gave you tainted food, its all on you and they are done with you the second money changes hands and you walk away with a sack of burgers.
Software we expect to use it, and get support for it,for much longer. That support costs money. Developing new updates costs money. Etc Etc.