Never buy digital from Sony, they are shit for consumer rights.
If you ever bought a movie on the PSP back in the day, you could only download the movie once, and had to rebuy to download it, even if you "Purchased" it
I have games I bought on my PS3, and using the same account, those same games do not show on the PS4 and PS5, they want me to buy, even though I am using the same account.