Most of them? If you stop paying for Creative Clouds, your Lightroom database is of no use anymore; you'll probably be able to open photoshop/illustrator files with other apps, but maybe not with all their subtleties.

On the other hand, non-subscription based software was only good as long as they were maintained for your current OS… So I don't care much if my software is subscription based or not, but I care a lot about them saving my data using open standards.