The most creative people in the industry are moving to independent studios. Big publishers are gonna milk every IP they can to make up for all the failed live service games.
Native ports, when done well, are just better man. It can make better use of resources and runs in a well supported ecosystem. Emulators are great but not ideal for experiencing games. It also puts a wall up for people to access games. The more people that can play the game the better.
Letting people who only have modern consoles and don't know how to work computers properly play a game sounds like a good thing to me. Also additional QoL changes can fully transform a game from a tedious mess to actually playable and fun. That's the best part about a remake. You don't have to buy it if you don't want it :)
Sly Cooper on the ps5 is emulated, not a native port. I've played some of the emulated Sony games on ps4 and they do not run very well, because the ps4 has to run an emulator and the game, instead of just running natively.