The former Adobe products had to be installed as copy a serial number and could without an Internet connection and used as long as desired (perpetual license).
Eventually the versions came with online activation, ok, can get over it, almost every PC has Internet access today. These applications can be just as long to install, as long as Adobe runs the activation server.
The fact that Adobe their software rented from now on only for a limited time, is the reason to look for an alternative for me. Too bad about, but if Adobe wants to scare their customers finally the time invested and accumulated know-how, then so be it.
At least with individuals the average useful life of a version is significantly higher than 1 year. It does not always require all the latest features, like not always the latest version (it has often one or more versions are skipped) or does not have time to familiarize themselves again in a new version.
If you want to use Photoshop cloud, so you have to pay all the time rent, regardless of whether one uses the program at the time or not. Including the rental rates for several years together, so the software is considerably more expensive in total: one wants to have the program at any time "available", you have to pay all the time. Skip versions no longer goes.
For me, sounds like new business model to speak maximum rip "customer potential skim large as possible". No thanks, time for a change. Recommend I'll Photoshop anyone. For business customers is likely to be more painful a change. However, the latter do not have all the other concerns, keyword results and company secrets are the internet in a strange cloud.
Adobe has left I think the path of reason.