A company or individual, is free to charge whatever they want for their product and services because that's the nature of the free world. No one is forcing anyone to buy or use that product or service. If I want to charge $50 for a cup of coffee I have the right to do so. It's my coffee. So what if my monthly fees eventually add up to the cost of a full license. I don't get any updates unless I pay for those as well, and in a year or two I'll have to turn around and buy another license because that software will be outdated, which makes it useless to me on a professional level. With a subscription service I never have to worry about my software eventually becoming outdated because all updates are included in my subscription. If I'm paying month to month and don't need it that month I just turn it off and turn it back on when I need it again, saving me even more money in the long run. I can also activate it on 3 different machines at any given time and not have to pay anything additional on my subscription. So no, I don't see any benefit to your method. I prefer Adobe's method and I look forward to other companies offering the same.