Indian products in general cannot be imported in Pakistan. There are exceptions, but for the most part a product from China or Korea can be sold with ease in Pakistan, but a product made in India will have a really hard time (rules and regulations) even entering the market. There are exceptions for certain things like entertainment.
Does this not bother the Indian CEOs? They can market their product everywhere else, but the 200 Million people next door don’t even know what Indian brands exist? I doubt most people in Pakistan are familar with Tata or any of its cars. Tata has to go about the long way, such as invest in another company to be able to do business in Pakistan.
From their perspective, they don’t even have to change their products much, and can even use the same marketing to promote their products.