Of course it’s impossible to domesticate any cat!
I’ve been trying to get Mr Zurik to come inside and stay indoors, but it hasn’t been very successful.
He’ll just oblige for a few hours at most then he gets very restless and wants to go out.
The other day, I achieved about 6 hours of keeping him indoors, but by midnight, he came upstairs to wake me up and started scratching at the wirenetting to be let out.
Maybe he still has a home to go back to.
Nowadays, he doesn’t spend all the time in our porch, he does go “somewhere”. Hopefully, he goes home.