We all like the idea of getting along.
In business relationships specifically, harmony is an essential ingredient in successful, long term relationships. If we have harmony, we have alignment, we have consensus (at least in terms of direction), we have the grounds for collective momentum.
The trick is in making sure that the basis for that harmony is real. Harmony isn’t about happiness, hugs and kisses. It’s often hard to get to, many times requiring debate, disagreement and (periodic) discontent. Achieving real harmony is almost always hard work.