what a profoundly useless comment. "why don't you do something else, unrelated, which doesn't solve any of the problems you have?" is absolutely the Ur-HN Reply.
Since virtualization has so many usecases, it's not possible to list all of the ways to do the thing without containerization (either with traditional virtualization or no virtualization at all), but be assured, you can do it, there's nothing special about containers, it's just another way to do things that you can choose not to use at all.