I don't think this is limited to India, we have had plenty of offers of "partnerships" etc from people with ideas. Our response has been to quote a minimum viable product cost and tell them to go find funding.
Some have come back to us with a budget and things have been built. But without a dedicated tech team studying the product they have a really tough time.
The reason we don't partner is non technical people always underestimate the work required to build, maintain and grow a product. The equity share on offer is simply not worth the risk but the people with the idea don't see it like that.
We've had some great ideas pitched to us too, it has been sad to see the ideas attached to people we didn't want to work with.