This is just one - the rest will follow. Microsoft has or will decide that the cloud version of Office will be the only way to get it etc. It's golden for the companies, they cut all the costs of manufacturing and distribution and they get a more predictable revenue stream. It also solves the problem of customers sticking with old versions and not being willing to pay for what may be upgrades of dubious value to many people. Depending on your perspective, there may be plusses for customers as well. People who are into the always connected to the cloud umbilical will take it as a natural development I suppose. I'm sure they've thought about outages and figure not that many people would be affected by a brief downtime just when their copy expired. They may have an embedded emergency code they can publish or something. Ironic though that they ended up with the CS2 debacle because the activation servers died. Personally, I think the whole clowd is a time bomb waiting for somebody to take it down in one massive cascading failure.

I don't know that Corel can do more than pick off a few people around the margins. Be interesting to visit some of the PS sites and see what the reaction is. I imagine Adobe has already gamed this out pretty well and decided that not that many will jump ship. Of course, Coca-Cola thought they had the new Coke thing planned out too so who knows. My ancient Corel PhotoPaint 8 still does most of what I need to do but I may have gotten a free/not free whatever CS2 so screw em.  

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken