How about we don't let businesses redefine words to fit their business needs. "buy" already had a perfectly clear meaning, and whatever Amazon Prime peddles, you're not "buying" anything.
It has been this way since recorded media has been made available. From the 45 your parents (grand-parents?) bought, the cassettes--VHS or audio--your parents bought (you bought?) to the CDs, DVDs, Blu-rays, and now digital copies.
Buy this revokable (at any time) license to view this content