This is an interesting subject actually. The issue arises not because Muslims demand halal products, but because Hindus don't demand any particular kind of product. If Hindus were to en masse decide that we want our own version of halal, then sellers will provide that version too, because it is the bulk of the market. In fact Muslims sellers can participate in that market too, unless they are expressly banned by Hindus. In the end, from the seller's point of view, this is no different from product specification. They will produce what you ask them to. In some ways the Hindu version of halal does exist, in the form of 'veg-only' restaurants or ayurvedic products. There are Muslim ayurvedic doctors in Kerala and many Muslims do eat in 'veg-only' restaurants. It is an issue of production efficiency, stocking, distribution etc really, and the onus is on sellers to decide if they can cater to all segments of the market.
The biggest hatcheries in India are owned by non-Muslims -
Venkateshwara, Suguna, Nandu's - Hindu owners
Godrej - Parsi owners
Their packets all say 'halal'. They are not doing it out of love for Muslims or Islam or secularism. They are doing it because of market dynamics. If Hindus decide they will eat only jhatka meat and demand the certification, these companies will produce jhatka meat also. They will be qeueing up outside govt offices to get their jhatka licence.
