A knowledgeable user will be aware of these shortcomings of so-called “ownership” of digital goods, but the average person doesn’t read license agreements and does not understand that their purchase can be revoked at any time by the seller.
The average person makes a purchase and expects to own the item in question.
California is at least taking a step forward in legislating that “sellers” can’t call it a purchase if you’re only getting a revocable license. Shops wouldn’t be allowed to use the word “buy” or “purchase” unless you get to own the product.