To balance the profit level by increasing the entry fee for foreigners is not the right process. It is an easy to implement way, like reserving seats for OBC. Foreigners are not attacted to India, mainly because its lack of infrastructure, communication problem, chaotic system, hassles in almost everywhere. There are so many attractive places, with so many varieties, but bad system discourage people to come to India, specially those who wants to tour safely and smoothly.
