I think this is similar to grocery store brands. Do you think that grocery stores should not be allowed to charge name brands for shelf space because they are competing against store owned private label brands?
https://en.wikipedia.org/wiki/United_States_v._Microsoft_Cor....
You can buy/sell it on eBay. Or next upgrade cycle change brands.
Music that you bought from iTunes has been DRM free for ages.
Most movies purchased from iTunes are transferable to Google Play, Amazon Video and Vudu vis the Movies Anywhere app.
edit: typo