Not among most people who aren't interested in these things. I think it's very reasonable for consumers to expect that "buy" means to keep in the way that it means for most other things. People should not have to be experts in how content licencing and distribution works to not get screwed over.

said differently "Buy ... the right to make it available at will at the place of purchase as long as the content provider licensing does not change, and as long your internet connection allows it"