it seems like many people can now just use the free version linked from ux.se It's a good question but generally the overwhelming majority of customers of such

it seems like many people can now just use the free version linked from ux.se It's a good question but generally the overwhelming majority of customers of such products can easily afford them. One way to think about it is imagine wanting a crunch bar. You can pay fifty cents in the vending machine steps from your desk. Or you can do down two levels and get it for free from your buddy. If I have fifty cents, I'd almost certainly just get it from the vending machine without even thinking twice(it's too little money). Now if I was so terribly broke or inconvenienced because I had no quarters(and the machine only took quarters), it'd be a whole different thing and I'd go for the free one.