Your logic seems to make sense. One pays for the "ability" to share over the internet and you need to pay to maintain that ability. Just like cell phone service, you pay a monthly fee to be able to talk over the phone. The same as the mailing service. One can subscribe to UPS or Fedex to have unlimited service. Or if one can subscribe to New York Times to read news, as long as he/she pays. However following this logic, if Microsoft or Apple charges a subscription fee for the operation system or even the computer you are using, every year, and if you stop paying the fee, you can't get back to your desktop anymore, do you think it's fair? The critical difference here is that for the subscription model, you either "rent" or "lease" the product like mailing or phone survice, because they *OWN* the infrastructure (trucks, planes, signal towers etc), or you subscribe to get *NEW* stuff in every period like a newspaper subscription. For Microsoft Windows, once it's written, and you buy it, you OWN it like a hammer you buy from a hardware store, and you can use it as long as you want. Dropbox runs on subscription model because the users use Dropbox server to store and version their files. That's called "rental"! And people are will to pay for that *service*. If btsync wants to charge subscription fee, provide storage and versioning, and confront Dropbox! Does btsync own any infranstructure over the internet, or does it provide new information to us that we need to know every year? I was a casual and occational user of Adobe software, and I will never buy a subscription to such an expensive software. I have switched to simpler and free alternatives, ie GIMP and inkscape.