Download the offline installer of any of your games on GOG, save it to a disc and it's yours forever.
You don't need a storefront's permission to play what you bought.
Unironically this is a good example of cosmic madness
You think the frog understands this? Well imagine if he got picked up by god and suddenly could understand and see it, then he was put down and became a normal frog again, no longer understanding it but still remembering it