The PS4 cannot play 4k Blu-ray and this player can - I think that is the biggest benefit.
Good price, I think it’ll be a while before 8k is available here in the U.K.
Who is? (cheeky) Virgin are a good shout - but they refused to lay 13 miles of fibre to my house... So one of the Openreach supplied providers it is.
Don't feed the troll (popcorn)
Probably because not everyone can get the required bandwidth to stream 4K. Also, some people still like physical content.