Cannot challenge the brand loyalty of Thais towards 7E.

About 7E being non halal in MY. Think a little more la.

Malays are not going to go to 7E if they had pork products in it.
7E would also cannot find local employees that willing to work in places that sells pork.

You can argue that can employ Bangla like KK does.
But KK does not sell pork also.

7E in TH works because it is well managed and the product quality and selection rivals those in JP.