sisyphic
A frustratingly futile task, especially one that keeps being attempted. Related to the Greek myth of Sisyphus, who is condemned to roll a huge bolder up a hill, only to have it roll down again, just before it gets to the top.
“We want to thank all of the activists that stood with us all these years. They stood by our side during the long sisyphic struggle, and all our supporters, in Israel and throughout the world,” he added.
Sisyphication
noun. Something that was previously attainable becoming a futile effort. Based off of the myth of Sisyphus, who was doomed to eternally roll a boulder up a mountain only for it to roll back down.
It's not possible to own things now, sisyphication has made everything into a monthly subscription.
Sisyphize
to make something impossible to happen; to foil or thwart.
How dare you Sisyphize my mission of converting them to my religion?