Collaborative marketing partnership for business targeting digital nomads

I am working on a business offering hassle-free home ownership for digital nomads.

There are a bunch of companies going after the exact same customer, but all solving different pain points (jobs boards, information, lifestyle, insurance, accommodation etc).

Most of us are solving complementary problems that DNs have, but with duplicative marketing efforts.

Maybe there is a win-win to be had by doing cross-referrals between our businesses.

Is anyone else building a business that solves a problem for digital nomads and wants to work out some sort of referral system?

Maybe it means there is an interesting space for a product discovery business for DNs...