There is a benefit: you do not want to stress your .com domain too much when you provide some network services like discovery services, tunnels etc to your customers.
The reason is pragmatic: if a company provides such kind of services then it may fall under a (false) scrutiny one day after somebody uses one of its services for, say, planting a stealth DDoS attack. The whole domain may be yanked or denylisted, and the last domain you want to see under the fire is your .com domain.
The same goes to .org: you do not want to see outsiders messing with your organizational endpoints and internal operations, so you better move them to a separate domain for the sake of a) clarity and b) risk hedging.
There are two drawbacks though: 1) higher domain costs 2) if you are not careful enough in managing expectations, people may be confused about which one to use and when.
