Get more profit to your business
It is not easy to succeed alone, including many considered impossible. This is also true in the business world. Remember: The man is a being of society. All we need each other (although sometimes deny it).
What is recommended is that their business would go alone. This will complicate the way for more profit. You should look for other companies in the same category (or perhaps a related item), and propose to charge an association of mutual assistance between the two companies (your company, and theirs).
In this way, they could be promotions, including the other company. For example: If you have a hotel, but has no gym. Could be associated with any nearby. And maybe they could reach an agreement that benefits both.
Could give some discount for customers from their hotel to attend the gym. And could also give a further discount for customers of the gym, attend to your hotel. Finally, there are several ways that benefit both companies, is only a matter of sitting down to talk awhile.