That is not true. We can immediately see that through Ghulam Ali, Zeba Bakhtiar, Salma Agha, Fawad khan, Humaima Malik, Javed Sheikh, Ali Zafar, Mawra Hocaine, Mahira Khan, Atif Aslam, Adnan Sami, Nusrat Fateh Ali Khan and Raahat Fateh Ali Khan easily working in Indian films. And Shilpa Shukla, Nandita Das and Naseeruddin Shah easily working in Pakistani films.
I have watched Pakistani comedy stage shows and I could identify with them. Pakistani cinemas have played Hindi films like Raid because they could identify with these films.
Watch
this interview of the Indian actress, Swara Bhaskar, on her trip to Pakistan. The interview is on the Pakistani show Mazaat Raat.
As for the political entities called India and Pakistan, they can continue with those names but what I want is that these two should have Progressive poltical systems, which would be to their benefit. The main issue between the two countries is Kashmir and this issue needs a political solution. Here's my contribution towards that :
1. Let India and Pakistan both become governed by the same Progressive / Socialist Direct Democracy system, while remaining two independent countries. This will be like how pre-2003 Iraq and Syria were, both governed by Ba'ath ideology while remaining two independent republics.
2. Let the India-administered Kashmir remain with India and Pakistan-administered Kashmir remain with Pakistan.
3. Convert the LoC into an International Border which is passable by passport for the reasons of trade, tourism and family visits.
This will remove most of the militant ideology surrounding the Kashmir issue. The only remaining militantism will be of the Regressive religious sort and that can be sorted out by both countries.
And this will also have the great effect of bringing both countries to a Progressive political system and governance.