Yes, there is. I work in logistics and we buy cargo space from carriers (air/ocean). While no one would want a free ride on a container ship, we occassionally do get ID50 on passenger planes. But most are quite restrictive on date changes, which is not always suitable for certain business trips.

We don't get any ID50 nor any other discounts from CX though. They have their own program to work with any corporation (not only in transport industry). Incentives are upgrade vouchers, etc. As for senior management in the logistics industry, they have as well the CX Cargo Clan with constant GO card no matter how much you fly.