Well, I've been a registered owner of Winzip since version 9, and they gave me a good price on upgrading to version 14 ($19.99) with a free upgrade to version 15 when it was released. The license also allows you to use it with one additional computer (my laptop) at no charge.
So the way I see it, there are some pieces of software I will still pay for (and Winzip handles many different archive formats, including .rar, etc).