Why isn't it a cheat homebrew to PS4?

is it much harder to hack PlayStation then Nintendo?
I mean I don't care about online cheating!
But I love to cheat in Final Fantasy and Kingdom Hearts.
Specially when I have completed the game ones!

But I mean I have search on the internet and did not find cheating app or something it PS3 or PS4?
In the Wii and Wii U you can cheat and have infinite health and more.

So why isn't it the same to PlayStation?