This platform will cooperate with companies like Nike? If so, it is simply doomed to success.
It just needs a couple of big names to get the ball rolling IMHO. Having those big names on board brings a positive reinforcement to casual users.
They need few big names as partners, that would help the project a lot.
They would maybe just need a couple of big names to get some additional promo. But Booking is already a big name if they can confirm them as a cashback partner.
Yes, such partnerships are of course very necessary for any new project, for many reasons and those who manage to get such high-profile partnerships, of course there are good chances of success. I hope these partnerships will be real and it will be good if there are many such partnerships.