What’s the difference between a software subscription and an entitlement?

Consider a magazine subscription.

You purchase a one-year subscription to the magazine. Each month, a new issue is sent to you, for you to enjoy its content.

The content is the entitlement. You are entitled to the content in the magazine because you purchased a subscription. The subscription gives you access to your entitlement.

All of the software and drivers made available to you as a result of your subscription, including any periodic updates available during the term of your subscription, are entitlements. We sell a subscription, not an entitlement. The subscription grants you access to whatever entitlements we may make available to you.