For me, my thinking on one time fees vs monthly fees comes down to this: Once I buy something, every time I use it decreases the amount of money I spent on it p

For me, my thinking on one time fees vs monthly fees comes down to this: Once I buy something, every time I use it decreases the amount of money I spent on it per time I used it. But with monthly payments, every time I don't use it makes it more expensive for every time I use it. The latter forces me to use it more, which is a burden if it is not something I need to have. I think you'll find that most of the webapps people pay monthly for are those things that they can't get with a one time purchse: generally new content, updated on a regular basis (Newspapers, Music, Movies, Television Shows,etc)