The case of Adobe is interesting. I think the move to a subscription model has been a hostile move for customers. The second you stop paying for the software, you lose the ability to open your old files. This has allowed smaller software applications such as Sketch, The Affinity Suite and Capture One to grab marketshare. I think Sketch’s current business model is perfect. Customers pay for a year of updates. If a cus…
"The second you stop paying for the software, you lose access to any of your old files." It seems you lose editing access, you still can view them. Still not great, but I wanted to clarify.
I suppose you could use a PSD or AI to Sketch converter. I'm unsure about other file types.