Perhaps Sony could add an optional tipping screen before digital checkout for the good customers.
Honestly, Sony should just retroactively bill consumers for inflation. Since $60 in 2016 is worth almost $89 today, they should charge all the people who bought the game back then a $29 price adjustment. It's the the only fair thing to do for.
If consumers don't like that option, an alternative can be a perpetual $5/year subscription that additional provides in-game stickers.
Another alternative is to just buy the used games and play them on the old consoles.
Are they though? Console sales have been dropping. It's only money left on the table if people are also purchasing consoles & games in the same quantities. How many people are just not buying these games because they are digital only?
TBH though, I think the ship has sailed a long time ago. Many games with physical media aren't really playable without downloadable updates anyway. Another reason the modern gaming experience has gotten worse.