I think the issue with letting people keep the software forever when they un-subscribe is that you can subscribe for just one month. So I subscribe to Photoshop and Lightroom for one month for $9.99, cancel my subscription, and get to use them forever? That doesn't seem right.

Even if it applies to yearly subscriptions only...I'm paying $120 a year for both Photoshop and Lightroom. That's a fraction of the cost you would have paid before they went subscription-only. Photoshop alone was $700.