In a recent lawsuit against Sony, the firm argued that "reasonable consumers would not be misled" into believing they own digital games that they "purchased" on the PlayStation Store. Folks on the Consumer Rights Wiki have now compiled a humongous list of specific instances in which Sony currently states that users do, in fact, own their digital PS4 and/or PS5 games. The list is currently up to 44 specifically documented statements, but actually notes hundreds of examples where Sony explicitly states that users do, in fact, "own" their games across its various services and pages.
In this case, Sony says that no "reasonable person" would believe that, when they add a game to their cart and click "Purchase" on the PlayStation Store, they are entering a contract that entitles them to ownership of the digital goods in question. Instead, Sony believes it's obvious that what you're paying for is a limited, revocable license for a service that only remains available as long as Sony offers it, which is quite different from ownership in a legal context.