MAGICPINxONDC????

I've been using Magicpin since 2021 and have recently gotten to know that they are a Zomato sub company and have Collaborated with ONDC as well for food and groceries, but then also, how are they giving all that stuff??? This might sound dumb but when I ought to order some food, probably chicken biryani from a good biryani joint, I check all my available options i.e. Swiggy, Zomato, Magicpin(I'm a student😶🙂), and although there are other options as well, I mostly check with these three only..., and I've recently downloaded Paytm to access the ONDC network from there as well..., my question is, suppose I'm ordering Biryani from the same joint from all the different apps, the one on Magicpin sometimes is like 50% of the others, so how are they still running?? Now for clarity, I've purchased the Membership plan of Magicpin so I can get away with almost none delivery charges, but the plan costs 100 a month and If I'm ordering just on Sundays, and delivery charges are like 50-60 each order without the Membership, then it's still costing me less..., I just want to understand, how they function, and one more thing, as I mentioned earlier, Paytm has also collaborated with Magicpin as well as Pincode by PhonePe, but their offerings are not as Magicpin.