It doesn't really matter if Apple loses the license to distribute it, since you as the purchaser (should) have an irrevocable perpetual license to streaming/download the content.
The distributor, who made the content originally available to Apple, is a party to the agreement, and they are obligated to make the content available under the same streaming/download service terms.
In other words, they have a liability to provide the streaming/download service forever. If they go bankrupt, then you could sue for recompense as a creditor. If they sell the rights to another company, then your streaming/download access goes along with it.
Don't get me wrong, I would love to live in your universe but we're a long way away from distributing content like that.
It would be nice if licensing any sort of copyrighted content came with a physical/digital transferable license that could be redeemed by the owner under with some reasonableness standard attached.
The distributor, who made the content originally available to Apple, is a party to the agreement, and they are obligated to make the content available under the same streaming/download service terms.
In other words, they have a liability to provide the streaming/download service forever. If they go bankrupt, then you could sue for recompense as a creditor. If they sell the rights to another company, then your streaming/download access goes along with it.