Just had a look online and it seems DC Universe Online will remain free to play on PS4 and you can use the original game from the PS3 rather than have to buy a new copy, you just need to download the updated texture pack to improve the graphics. Meanwhile at Microsoft, Phil Spencer has this too say about Minecraft on Xbox One "No, it's a new product on Xbox One," Spencer rebutted, when we asked whether you could roll over save files from the existing console version." Translated "If you want to play Minecraft on Xbox One, you have to pay us again, regardless if you bought it on Xbox 360"......which I did lol.
Taking into consideration that DC Universe Online is only free to play due to Anonymous hacking the PSN network shutting it down for a week (which they only did as Sony tried to prevent people from hacking the PS3), I'd say people are getting a pretty good deal out of that game. When people hacked the 360's, the console was banned and became worthless, meaning you had to buy a whole new one.