I came across a superior licensing (adapted below). It is kind to customers who need the software briefly rather than regularly. To sum it up the software works perpetually but updates require periodic renewal. It also encourages developers to serve the people's needs so they renew the service. Currently you have to pay constantly for software that doesn't have to improve.

Yearly License Explained
The yearly license model is becoming a popular pricing model for design tools. It’s fair for developers and customers.

You get frequent, useful updates and we get rewarded for our ongoing full-time work on Adobe. You aren’t tied to a bothersome subscription and we aren’t incentivized to hold back features for huge yearly releases.

Free Minor Updates
You will also receive free smaller updates with bug fixes and small new features.

License Expires After a Year
Your license expires, but you still get free minor updates. When a new major version is released, renew your license to upgrade.

Adobe Never Stops Working
You can choose not to renew and continue using your current version as long as you want. We’ll even release free critical bug fixes if necessary.