I think even that goes back around to business interests. We can't store that many physical copies in shrinking, expensive housing. Digital purchasable media is somehow just as expensive despite having tiny manufacturing and logistical costs, on top of being unreliable due to DRM.
Subscriptions so far seemed like a better value proposition but between splitting and vanishing libraries, increasing prices and the addition of ads, that's becoming more questionable. Even average people aren't so thrilled of having to subscribe to a dozen different services to watch, listen and play what they want.