Using Amazon as an example…
You can buy films on Amazon to watch.
They are stored online and you access them via your Amazon account.
As soon as you delete your Amazon account you can no longer access those films even though you paid for them.
Or like if you are a Sponsoring member of TWW you can access the Sponsor forums and post/view content there, but if you unsubscribe from a Sponsoring account you can no longer access that content?