"Object Desktop" is Stardock's name for their Subscription process for the included suite of programs.
By definition it is a Subscription-only Subscription.
Reason being the on-going fee caters for both new and updated products across a range of types.
A single purchase 'lifetime' option for the typical Stardock product, for example Fences 6, means you are entitled to each and all updates and revisions to Fences 6. It does not automatically follow on to a later release... eg Fences 7 which may be to cater for changes to the Microsoft Windows releases eg...from 11 to 12.
A recurring subscription is the model for keeping people and their systems 'current' in the same manner as Internet security products do. 